Answer:
B. The chromosomes exchange genetic information.
Explanation:
Crossing over of tetrads during meiosis is very important for the exchange of genetic information.
This step of meiosis allows for each chromosome to be genetically unique and distinct from the others, creating genetic variation.
Crossing over does not double the number of chromosomes or reduce the number. The number of chromosomes stays the same.
So, the correct answer is B. The chromosomes exchange genetic information.
I need help with 9 and 10
Answer:
9 melting and evaporation
Why do sunspots appear as dark spots on the surface of the Sun?
Answer:
I think it is because the sun has released energy and looses light in that area because of it.
Explanation:
Describe an experiment that would allow you to determine if it is warmer inside or outside the playhouse by using two similar cups filled with equal amounts of ice
The ice melts in the playhouse quickly is considered a warmer playhouse.
Place two cups of equal size and have equal amount of ice in the two separate playhouse in order to find out which playhouse is more warmer and which is less. Note the time and after sometime check the cups of ice in both playhouses.
That playhouse in which all the ice turns into water than the other one is considered warmer playhouse as compared to the other one because high temperature melts ice very quickly so we can conclude that the ice melts in the playhouse quickly is considered a warmer playhouse.
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9. WHY IS THIS (ANSWER TO #8. FROM ABOVE) MOLECULE SO IMPORTANT?
Answer: Adapter Molecule of RNA
Explanation:
It's a link for mRNA and amino acids.
2. The endocrine system includes specialized cells that help fight
bacteria and viruses.
a. True
b. False
What 2 elements are abundant in nature but not in a readily available/usable form?
Nitrogen occurs in air as N2 which is not readily available to organisms.
Many elements occur in nature in various forms. Not all forms in which elements occur in nature are usable. Some forms in which elements occurs can not be used unless they undergo some kind of extraction and purification process.
Two elements are abundant in nature but not in a readily available/usable form are nitrogen and silicon. Nitrogen occurs in air as N2 which is not readily available to organisms. Silicon abundant in soil and is used in making glass but must be processed before it can be used.
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Rather than flight, what do scientists think feathers initially evolved for?
Answer:
Many Bird ancestors like dinosaurs originally had these feathers even tho they didn't fly. Bird feathers have originally been thought to be used for mate attraction or even insulation. Modern birds have many different types of feathers!
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welcome !
I just don’t understand my dad why I should go to the school
Answer: well i basically agree with u what "smart" invtented school anyway
Explanation:
How is instinctive behavior acquired?
A)
parental teaching
B)
Learned experience
inductive reasoning
D)
genetic inheritance
Explain what TWO forces cause Earth’s water to bulge?
Answer:
Gravity and inertia act in opposition on the Earth's oceans, creating tidal bulges on opposite sites of the planet. On the “near” side of the Earth (the side facing the moon), the gravitational force of the moon pulls the ocean's waters toward it, creating one bulge.
Explanation:
give an example of a scientific investigation design with appropriate constants and variables
(IV and DV)
Answer:
An example of a scientific investigation design that uses independent variable and dependent variable in its design is a research that seek to find out the effect of two different fertilizers on the growth of a tuber crop (yam). The independent variable in this case is the type of fertilizer used while the dependent variable is the corresponding growth of the tuber crop. In a research set up, the independent variable is the variable that cause a change in the dependent variable.
Explanation:
Hope this helps
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Question 15
2 pts
When a cross between 2 contrasting parents produces new phenotype, different from
either parents, we can conclude that that there is which of the following?
When a cross between 2 contrasting parents produces a new phenotype, it is known as incomplete dominance. In diploid (2n) organisms, individuals receive one allele or gene variant from each parent.
Heterozygous individuals carry different alleles for the same gene locus.
Incomplete dominance occurs when both alleles are expressed in heterozygous organisms.
The phenotype in cases of incomplete dominance is a mixture of the phenotype observed in both parents.
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List one difference and one similarity between the reproduction processes
of a frog and a woman.
Appearance*In most frog species, the female is larger than the male, so frog size relative to a standard can be a good method of gender identification. In some species, the female frog is darker in color than the male, and in others, the male is darker.
Typically, frogs lay eggs. This process usually occurs through external fertilization, where the female releases her eggs from her body into water. Then, the male releases his sperm to fertilize them.In this case, the eggs are fertilized inside the female's body before they are released.How is space exploration important to the economy?
Explanation:
Space exploration thus supports innovation and economic prosperity by stimulating advances in science and technology, as well as motivating the global scientific and technological workforce, thus enlarging the sphere of human economic activity.
Salt water gargle can temporarily relieve a sore throat. One recipe calls for 3/4 teaspoon of salt in 1 cup of water. A second recipe calls for 1 2/3 teaspoon of salt in 2 cups of water. Which recipe will
taste saitier? Explain.
Answer:
I believe the one with 2 cups of water will be saltier
Explanation:
When you change the fractions to a common denominator, which is 12, you see the recipe with 1 cup should be half of the recipe with 2 cups. But the one with 2 cups is more than double the recipe with 1 cup.
Biochemists developed a compound that they hypothesize will disrupt the ability of the cells to organize centrioles and microtubules. This compound is applied to a group of onion root tip cells. What will serve as the best evidence that the biochemists' hypothesis about this compound is correct? Biochemists developed a compound that they hypothesize will disrupt the ability of the cells to organize centrioles and microtubules. This compound is applied to a group of onion root tip
In order to serve as evidence that the hypothesis put forward by the Biochemists is true, they will have to observe that the onion cells stop multiplying and the roots do not grow.
The primary function of microtubules and centrioles in a cell (or at least one that they have in common) is their participation in cellular division, that is, mitosis and the formation of a cytoskeleton.
Without the formation of these structures, the cell will a cytoskeleton and the ability to divide. Therefore, we can confirm that evidence of this hypothesis would be for the cells to lack these functions.
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Help me solve this question please
Answer:
where is the question .....?????
help me please like rn :(
Which option distinguishes what a commodities trader would do with the information in the following scenario?
A heat wave is expected to hit the central United States and cause a drought that will kill off many wheat plants.
sell off wheat supplies immediately at their highest price
immediately buy futures contracts at their current prices
cancel all options on future sales of wheat
wait until the heat wave to make wheat purchases
The commodities trader would immediately buy futures contracts at their current prices. The correct option is C.
Thus, a commodities trader would probably predict a decline in wheat supply if they learned about an anticipated heat wave and drought that may affect wheat plants. They would then buy futures contracts at their present levels in response.
By taking this move, the trader is able to protect himself against prospective price rises brought on by the decreased supply of wheat by securing the right to purchase wheat at a certain price in the future. The trader may be able to take advantage of the predicted market conditions before the impact of the heat wave is fully felt by purchasing futures contracts.
Thus, the ideal selection is option C.
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i have a leopard gecko and its heat lamp bulb burnt out will it be ok until tomorrow? sorry i have no friends to ask yk
Which structure is this statement most likely referring to
Answer:
semipermeable membrane is a large glucose molecule that requires facilitated diffusion but an oxygen molecule does not.
please help me i really would appreciate it
Answer:
i think it's the S phase
Explanation:
During the S phase, DNA replication occurs.
What is an example of a population in a desert ecosystem
Answer:
scorpions
Explanation:
scorpions live in but the desert
a material similar to the earths mantle would be
A. Wood
B. Copper
C. water
D. silly putty
1. What do we call the study of the earth and its structure?
Geology !
Explanation: (if needed)
The studies of Earth’s physical structure and substance, its history and the processes that act on it. People who work in this field are known as geologists. Planetary geology is the science of studying the same things about other planets. It includes the study of organisms that have inhabited our planet. An important part of geology is the study of how Earth's materials, structures, processes, and organisms have changed over time. Geology involves methods and knowledge from biology, chemistry, physics, and mathematics.
Answer:
This study is called geology
Explanation:
Geology is a branch of Earth science concerned with both the liquid and solid Earth, the rocks of which it is composed, and the processes by which they change over time. Geology can also include the study of the solid features of any terrestrial planet or natural satellite such as Mars or the Moon.
Temperature-sensitive alleles are an example of conditional alleles; at the permissive temperature, the gene has normal function, whereas at the restrictive temperature, the gene has mutant function. You are studying the E2F pathway and you obtain a temperature-sensitive CDK4 mutant. At the permissive temperature, CDK4 functions normally. At the restrictive temperature, CDK4 is non-functional. Would you expect cells to continue growing or stop dividing when at the restrictive temperature? Explain your answer.
When at the restrictive temperature, we can comfortably expect the cell to stop dividing, whilst continuing to grow
The E2F pathway in a cell is responsible for the transition from the G1 stage of the cell cycle to the S stage. The G1 stage is where a cell grows and expands before the duplication of its DNA.
The S stage stands for synthesis. This is the moment in the cellular cycle in which the DNA of the cell is copied in order to prepare for cellular division.
Therefore, if the transition from G1 to S is blocked by temperature restrictions, we can expect the cell to continue growing, but not divide.
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What is different between the production of sperm cells and egg cells
Answer:
The most obvious difference: A sperm cell is a reproductive cell of males while egg cells are of females. Both egg cells and sperm cells depend on each other for the reproduction of a human life. Both egg cells and sperm cells undergo meiosis.
Explanation:
help please this is about dna in biology
Answer:
That image is way too blurry to read. Can you comment what it says so I can put an appropriate answer?
Explanation:
GIVING BRAINLY
Which characteristic do animals with an endoskeleton have that animals with
an exoskeleton lack?
A. A skeleton outside their body
B. A skeleton inside their body
C. The ability to get heat from the environment
D. The ability to produce most of the heat they need
Answer:
A.
Explanation:
Cause endo skeleton is on the inside
Explain five possible setbacks a company could face if they don't develop effective configuration management policies and processes.
Possible setbacks are the difficulty in keeping up with market changes, failures in product production, failures in product distribution, sector problems, problems in the management of employees.
We can arrive at this answer because:
The management of a company is essential for its proper functioning and the success of the production.One of the first problems that lack of management causes is the difficulty in keeping up with market changes. This makes the company outdated and inefficient.Talking about the production and distribution of the product harms sales and reduces the number of customers.Sectoral problems hinder organized production, which will also affect sales.Problems in managing employees will also be disadvantageous, as it will affect all of the company's compositional factors.Therefore, we can say that management is the most important point to be organized.
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How does human activity harm or benefit the environment?
Answer: Humans harm the environment in many ways such as overpopulation, pollution, burning fossil fuels, and deforestation. These also, can cause many changes like triggered climate change, soil erosion, poor air quality, and undrinkable water.
Explanation:
