A regulator gene, regulator or control gene, is a gene involved in controlling the expression of one or more other genes. Regulatory sequences that encode regulatory genes are often located at her fifth end of the transcription start site of the genes they regulate.
Regulatory elements are sequences of DNA that are recognized and bound by specific transcription factors to recruit or exclude RNA polymerase. Promoters co-regulate gene transcription with nearby transcription factor-binding elements. Regulatory DNA sequences also encode important functions. They control when, where and how many genes are expressed. To do this, they encode 'landing pads', or binding sites for transcription factor proteins. Transcription factors recruit the molecular machinery that transcribes genes.
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If a female fruit fly is heterozygous and carries one allele for white eyes and one allele for red eyes, her mutant allele and her nonmutant allele will segregate during meiosis i.
It is true that if a female fruit fly is heterozygous and carries one allele for white eyes and one allele for red eyes, her mutant allele and her nonmutant allele will segregate during meiosis.
Genotype of female fruit fly is females are XX, and adult males are XY. Sex-connected developments are most effective observed at the X chromosome, consequently the letters are located as superscripts (above) the X chromosome. Therefore the genotype for the girl fly is XrXr and the male is XRY.
Physical exchange between homologous chromosomes (crossover) occurs during the four-strand stage of meiosis.
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college students, male and female, are solicited for sperm and egg donations through ads in newspapers and online. have you seen any ads for donors? do you know anyone who has been a sperm or egg donor? what was his/her experience?
For charitable or financial reasons, many college students enroll. the early 20s, sperm donation and egg donation for females allow them to assist infertile couples in having children and they frequently receive significant compensation for their efforts.
Why would someone donate their gametes?
When one or both partners are unable to provide their own sperm, eggs, or embryos, it is still possible to conceive a child through gamete or embryo donation.
Many contributors also give for less self-centered reasons, even though they may not appear like easy money to cash-strapped college students.
Therefore, It provides childless couples with the opportunity to begin a family.
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what role do fungi fulfil in the global carbon cycle? group of answer choices fungi are fixing carbon via photosynthesis. fungi are releasing fixed carbon back into the environment to be reutilized by autotrophs. fungi reduce atmospheric carbon dioxide via respiration. fungi provide fixed carbon to plant roots.
describe the type of digestive system that platyhelminthes have. explain why it has so many small projections that extend into all parts of the body.
The digestive system of Platyhelminthes is branched and incomplete, with the mouth serving also as an excretory pore.
Cestodes like the tapeworms have tiny projections throughout the body surface known as microvilli which increase the surface area and promote the absorption of nutrients from the host.
Phylum Platyhelminthes includes the flatworms which are acoelomate, i.e. do not have a coelom or body cavity. Most flatworms are parasitic in nature and derive their nutrition from a host. These types of worms (cestodes) possess tiny projections called microvilli that are present all over the body surface since they lack a digestive system.
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How are the light-dependent reactions of photosynthesis related to the light-independent reactions of photosynthesis?
Responses
The light-dependent reactions break down molecules necessary for the light-independent reactions.
The light-dependent reactions break down molecules necessary for the light-independent reactions.
The light-dependent reactions use molecules produced by the light-independent reactions.
The light-dependent reactions use molecules produced by the light-independent reactions.
The light-dependent reactions break down molecules produced by the light-independent reactions.
The light-dependent reactions break down molecules produced by the light-independent reactions.
The light-dependent reactions produce molecules used by the light-independent reactions.
4. Explain how ATP generation is linked to the light dependent reactions of photosynthesis:
Answer:
the atp is linked by blood cells
If a cat normally has 38 chromosomes in its somatic (body) cells, how many chromosomes will be in its gametes? A. 19 B. 76 C. 38 D. None of these
The number of chromosomes in the gametes of the vat that normally has 38 chromosomes in its somatic cells is 19 chromosomes (option A).
What is meiosis?Meiosis is the cell division of a diploid cell into four haploid cells, which develop to produce gametes. The gametes possess half the number of chromosomes of the parent cell.
The somatic cells or body cells have a diploid number of chromosomes, however, when they undergo meiosis, they become haploid (one set of chromosomes).
For example, if a cat has 38 chromosomes in its somatic diploid (2n) cell, the number of chromosomes that will be present in the gametes produced as a result of meiosis will be 38/2 = 19 chromosomes.
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read the abstract for the article on coral trees in italy (number 2 listed in the above examples). what is the purpose of their work?
The purpose of the tentacles of coral polyps is for defense, food capture, and clearing. This is the main purpose of this particular activity.
What are the composition of coral reefs and their process of reproduction?Coral reefs are made up of genetically identical coral polyps. new polyps develop as offshoots from the parental polyp. Coral reefs are made up of genetically identical coral polyps. new polyps develop as offshoots from the parental polyp.
The type of reproduction do coral polyps use to multiply themselves are budding as the outgrowth and eventual splitting off of a new individual from a parent and fission is the separation of a parent into two or more offspring of about equal size and the another process is fragmentation which is the breaking of the parent body into several pieces follow by regeneration.
Therefore, The purpose of the tentacles of coral polyps is for defense, food capture, and clearing. This is the main purpose of this particular activity.
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1. Which particle in the nucleus of an atom has a neutral charge?
a. neutron
b. carbon
c. proton
d. electron
Neutron is the answer (a)
which of the following please help me
Answer:
the highest structural level in the elephant body is the foot
Color is not a good indicator to identify a
mineral because
a) Different minerals can be the same color
b) All of the above
c) Color can change due to exposure to air or
water
d) Some minerals can come in many colors
1. Compare and Contrast Compare the direct
and indirect methods that geologists use to
understand the structure and composition of
Earth's interior using examples.
Answer:
Earth's Interior? ▫ By studying ... Direct observation (rocks originating ... By studying earthquake waves ... Many are probably pieces of proto-planets similar in composition to Earth.
Explanation:
please help!! its needed to be ordered from youngest to oldest
Paleoproterozoic ; Granitic Gneiss
Paleoproterozoic ; Hornblende, Diopside - hornblende
Paleoproterozoic ; Hornblende schist,
Paleoproterozoic ; Magnetite ore
Paleoproterozoic ; late Jurassic syenite
Paleoproterozoic marble and calciphyre
Paleoproterozoic diopside, diopside - phlogophite and diapside - Hornblende .
What is Paleoproterozoic ?The earliest of the Proterozoic Eon's three subdivisions, the Paleoproterozoic Era, lasted from 2,500 to 1,600 million years ago. The Paleoproterozoic is the longest geological period in Earth's history. The first time the continents stabilized was during this time period.
The Proterozoic Eon, which lasted from 2.5 billion to 1.6 billion years ago, has three subdivisions, the first of which is the Paleoproterozoic (Ga). The earliest stability of the continents occurred at this time, and cyanobacteria
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FILL IN THE BLANK. a ribozyme is ___ . an rna with catalytic activity an enzyme that synthesizes rna primers during dna replication an enzyme that synthesizes rna as part of the transcription process a catalyst that uses rna as a substrate an enzyme that catalyzes the association between the large and small ribosomal subunits
Catalytically active RNA molecules or RNA-protein complexes, in which just the RNA supplies the catalytic activity, are referred to as Ribozymes.
Does the RNA polymerase enzyme catalyze the synthesis of RNA from a DNA template?During the DNA transcription process, which converts a DNA template into RNA, RNA polymerase enzymes produce an RNA copy of a DNA sequence. RNA polymerases are multi-chained polypeptides with a molecular weight of 500,000. RNA polymerases come in three different varieties in eukaryotic cells.
Which enzyme is primarily in charge of the primary steps involved in creating a new DNA strand?The enzyme DNA polymerase is one of the essential components in DNA replication. DNA is created by DNA polymerases, which incorporate nucleotides.
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in goldfish, the twin-tailed trait has two alleles. goldfish that have a heterozygous genotype produce the single-tailed phenotype. this means that goldfish with the twin-tailed phenotype must be
Answer:
Homozygous recessive
Explanation:
This is because if single-tailed is heterozygous the alleles would be Tt which would mean the single-tailed trait is dominant and twin-tailed is recessive.
T = Single t = twin
So, for a recessive trait to show there would have to be two of them with would make it tt which is homozygous recessive since both of them are recessive.
which is not a function of the lymphatic system? question 5 options: 1) transports dietary lipids 2) returns excess interstitial fluid to the bloodstream 3) houses and develops lymphocytes 4) generates immune responses 5) no exceptions; all choices are functions of the lymphatic system.
The correct answer for the given question is: (5) No exceptions, i.e. all of the options show the functions of the lymphatic system.
The lymphatic system has several functions in the body. It is responsible for regulating the fluid levels in the body. It does so by removing extra interstitial fluid from the respective tissues and redirecting it into the bloodstream. The lymphatic system also takes up dietary fats or lipids and is also responsible for the transport of these lipids.
The lymphatic system also acts as a site for the storage as well as the development of lymphocytes. It is also associated with the generation of immune reactions.
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What is the difference between an introduced and an invasive species?
An introduced species is not necessarily harmful to the environment. an invasive species has a negative effect.
An introduced species is an alien species that has been integrated into the native environment in some way by humans or other means. The main difference from introduced species is that they integrate into their native environment without adversely affecting the surrounding ecosystem.
An alien species is an organism that is not native to the place or region where it is believed to have been introduced, but that has been accidentally or intentionally bringing to a new location by human activity. Invasive species are animals or plants from another part of the world that do not belong to the new environment.
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Based on the experiment in the scenario, which visual aid would be most helpful in showing the change in the plants' heights over time?.
Answer:its b
Explanation:i think its b
which of the following statements about ips cells is false? group of answer choices ips cells can be made by adding a combination of transcription regulators to a fibroblast. a cell that is dedifferentiated to become an ips cell will undergo changes to its gene expression profile. stimulation by extracellular signal molecules causes ips cells to differentiate. ips cells made from mouse cells can differentiate into almost any human cell type.
iPS cells made from mouse cells have the ability to develop into practically every form of human cell. This assertion is untrue. IPS cells are pluripotent, which means they have the potential to develop into any form of cell found in the body.
Adipocytes, cardiomyocytes, primitive hematopoietic cells, pancreatic beta-cells, and a number of distinct neuronal cell types have all been developed from human iPS cells. The development of iPSCs, which are made from skin or blood cells and reprogrammed to return to a pluripotent stage akin to that of an embryo, has made it possible to create an endless source of any type of human cell needed for therapeutic purposes.
As a result, we can conclude that the claim stated in option D—that iPS cells produced from mouse cells can develop into virtually every type of human cell—is untrue.
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Most scientists can agree on the state of earth's environment when life first appeared. What was the state of the environment when life first appeared on earth?.
The Hadean Bioscience colleagues refer to the early Earth as a "bare planet," meaning that it didn't have an atmosphere or an ocean when it originally formed.
What means of environment?Environment can be defined as a sum total of all the living and non-living elements and their effects that influence human life. While all living or biotic elements are animals, plants, forests, fisheries, and birds, non-living or abiotic elements include water, land, sunlight, rocks, and air.Environment mainly consists of atmosphere, hydrosphere, lithosphere and biosphere. However, it can be loosely categorised into two sorts, namely (a) Micro environments and (b) Macro environments. It can also be split into two more categories, such as (c) the physical environment and (d) the biotic environment.
What is importance of environment?Healthy living as well as the continuation for life on Earth both depend on the environment. Earth is home to many different living beings, and all of us rely on it for necessities like food, air, & water. Therefore, it is imperative that each individual protect and preserve our ecosystem. Geographical setting & artificial environment are the two categories of environments.
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which of the following is not one of the main methods for reconstructing ancient environments? group of answer choices 40k/40ar analysis of lava flows and of ash layers stable carbon isotope analysis of fossils and of soils oxygen isotope analysis of marine microorganisms faunal analysis of habitat-specific species
40K/40Ar analysis of lava flows and of ash layers of the main method for reconstructing ancient environment.
What are at least three methods used to reconstruct ancient environments?
The three types of biological proxy data that are commonly used to reconstruct past environments are indicator taxa, assemblage analysis, and biophysical responses.
Hence, 40K/40Ar analysis of lava flows and of ash layers.
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The highlighted structure is called ___ and it is proportionally _in human compared to the similar structure in the sheep brain.
The lens, which is the emphasized structure, is comparatively smaller in human brains than it is in the brains of sheep.
What is controlled by the brain?The brain regulates many bodily functions, including the function of numerous organs as well as thinking, memory, language, arm and leg motions. By controlling heart and breathing rates, it also affects how people react to stressful situations (such as completing an exam, losing a job, having a baby, being ill, etc.).
Which is more crucial, the heart or the brain?Without a doubt, the brain is the most important component of the human body. The brain is the home of the mind, emotions, personality, and consciousness. It oversees and coordinates all of its skin's other processes, including the heart. Alzheimer's disease and other signs of brain damage
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how does an acquired mutation in a somatic cell gene leading to cancer development affect a person's ability to pass on a predisposition for that cancer type to his or her children?
There is no risk of passing on a cancer predisposition from a somatic cell mutation.
There are category of gene mutation, Hereditary mutations: that are inherited from a determine and are gift for the duration of a person’s life, and it is nearly in each cell at the same time as the second is, somatic or received mutation: this kind happens a few instances and are found in a selected cells.
Hence, somatic mutation can't be exceeded to the subsequent generation.
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Humans build cities that replace grassy areas with concrete. What processes would that impact in the water cycle and why?.
Structures and sealed surfaces have an influence on the natural water cycle. As a result, stormwater is produced and natural water flows are changed.
Stormwater is rain that has accumulated on sealed surfaces like roadways, walkways, and rooftops. It enters our rivers immediately through the stormwater drainage system.
Urban regions see an upsurge in rainwater entering their rivers when it rains. Flooding into the stormwater drainage system causes water that would typically seep into the ground to be delivered directly to our rivers. Our rivers are impacted by large amounts of stormwater by:
fish and other water species' habitats are being harmeddisrupting aquatic creatures' breeding cyclesbank erosion in streamsincreasing levels of turbidity and pollutionaltering the seasonal flood patternsHere is another question with an answer similar to this about water cycle: https://brainly.com/question/22883431
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Which human body systems interact to provide
movement with the human body in response to
stimulus?
Answer:
The Skeletal, Muscular, and Integumentary Systems.
Explanation:
i just want to help
10 things about genetically different amongst humans that is most likely due to crossing over?
Each chromosome is a distinct pattern of DNA that represents portions of the genome that have been passed down from generation to generation
What is the genetic result of crossing over?The exchange of genetic material across homologous chromosomes is known as crossing-over. It results in new gene combinations on each chromosome. During meiosis, when cells divide, homologous chromosomes are randomly distributed to daughter cells, while distinct chromosomes segregate independently of one another.The closer two genes were on a chromosome, the more likely they were to be inherited together. Genes placed farther apart on the same chromosome, on the other hand, were more likely to be separated during recombination.Each chromosome is a distinct pattern of DNA that represents portions of the genome that have been passed down from generation to generation, occasionally being scrambled between chromosomal pairs.To learn more about chromosomes refer,
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type i alveolar cells allow rapid diffusion of gases through their thin membranes. secrete a chemical known as surfactant. are phagocytic. allow rapid diffusion of gases through their thin membranes, secrete a chemical known as surfactant, and are phagocytic. none of the statements are true.
Type I alveolar cells allow rapid diffusion of gases through their thin membranes.
Type I alveolar cells covers 95% of alveolar surface and plays an important role in air–blood barrier function of lungs. They also develop plasticity in the process of alveolar regeneration .
These cells lines up the alveolar surface and maintain the leakage of fluid and protein across the air space , that helps to allow the gases to freely exchange across the air- blood barrier . They are also considered as terminally differentiated cells, whose life span is 120 days approx.
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how did the evolution of the jaw contribute to diversification of early vertebrate lineages? group of answer choices it made additional food sources available. it allowed for smaller body size. it was the first stage in development of a bony skull. it increased the surface area for respiration and feeding.
The evolution of the jaw contribute to diversification of early vertebrate lineages as the group of answer choices it made additional food sources available. Thus, option A is correct.
What is evolution?
Evolution has the shift in the biological population's heritable traits over successive generations. These traits are the result of genes that are expressed during reproduction and transferred from parent to offspring.
The process of mutation, genetic recombination, and other causes of genetic diversity frequently result in the different traits existing within a population.
When these variations are subjected to evolutionary processes like natural selection (which includes sexual selection) and genetic drift, specific traits within a population start to become more or less prevalent. This is when evolution happens.
Therefore, The evolution of the jaw contribute to diversification of early vertebrate lineages as the group of answer choices it made additional food sources available. Thus, option A is correct.
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4. A 50-year-old male who is not overweight and has normal blood cholesterol levels suffers a heart attack. Propose a possible explanation.
in what way are plants similar to algae? in what way are plants similar to algae? both have extensive root systems. both can do photosynthesis. both absorb nutrients from their environment through their entire body surface. both have stiff stems that support the organism against gravity.
Plants are similar to algae in the following manner:-
Both of them can perform photosynthesis.
Plants as well as algae produce their food through the process of photosynthesis. During this process, they take up Carbon dioxide gas as well as water and with the help of chlorophyll pigments along with the light absorbed from the Sun, they produce glucose and give out Oxygen gas.
Algae possess chloroplasts, just like all plants with the help of which they are able to perform the process of photosynthesis. However, algae do not contain plant-like structures such as leaves, roots as well as stems, etc.
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