Explanation:
A. It allows biologists to organize a series of fossils by their age
biology lab 14 experiment 1 punnett square crosses post lab questions
Complete question: PUNNETT SQUARE CROSSES
1. Set up and complete Punnett squares for these crosses (remember Y = yellow, y = blue):
a. YY and Yy
b. YY and yy
2. Answer these questions: a. What are the resulting phenotypes? b. Are there any blue kernels? c. How can you tell whether or not there are blue kernels?
3. Set up and complete a Punnett square for a cross of two of the F1 from Step 1 (above).
4. Answer these questions: a. What are the genotypes of the F2 generation? b. What are their phenotypes? c. Are there more or fewer blue kernels than in the F1 generation?
5. Identify the four possible gametes produced by the following individuals (S = smooth, s = wrinkled):
a. YY Ss
b. Yy Ss
Punnett squares are used to get the genotypic and phenotypic frequencies among the progeny produced from a cross. Punnett squares and answers below.
What is a punnett square?The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.
Punnett square shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.
In the exposed example,
Diallelic genes that codes for color
Y = yellow ⇒ dominant allele
y = blue ⇒ recessive allele
We will assume complete dominance, meaning that genotypes with at least one dominant allele will express yellow.
1)
a- Cross 1
Parentals) YY x Yy
Gametes) Y Y Y y
Punnett square) Y Y
Y YY YY
y Yy Yy
F1) Genotype
1/2 = 50% of the progeny is expected to be homozygous dominant, YY
1/2 = 50% of the progeny is expected to be heterozygous, Yy
Phenotype
100% of the progeny is expected to be yellow.
b- Cross 2
Parentals) YY x yy
Gametes) Y Y y y
Punnett square) Y Y
y Yy Yy
y Yy Yy
F1) Genotype
100% of the progeny is expected to be heterozygous, Yy
Phenotype
100% of the progeny is expected to be yellow.
2)
a. What are the resulting phenotypes? Only yellow kernels
b. Are there any blue kernels? No
c. How can you tell whether or not there are blue kernels?
Blue is the recessive phenotype for kernels. Assuming complete dominance, since all genotypes are expected to carry at least one dominant allele, all the F1 kernels are yellow.
3) Let us cross two heterozygous individuals from the F1
Parentals) Yy x Yy
Gametes) Y y Y y
Punnett square) Y y
Y YY Yy
y Yy yy
F1) Genotype
1/4 = 25% of the progeny is expected to be homozygous dominant, YY
1/2 = 50% of the progeny is expected to be heterozygous, Yy
1/4 = 25% of the progeny is expected to be homozygous recessive, yy
Phenotype
75% of the progeny is expected to be yellow.
25% of the progeny is expected to be blue.
4)
a. What are the genotypes of the F2 generation?
- 25% YY (homozygous dominant)
- 50% Yy (Heterozygous)
- 25% yy (Homozygous recessive)
b. What are their phenotypes?
- 75% yellow kernels
- 25% blue kernels
c. Are there more or fewer blue kernels than in the F1 generation?
More. Blue kernels appeared in the F2.
5. Assuming independent genes, the resulting gametes after meiosis are as follows
Gametes
a. YY Ss ⇒ YS, YS, Ys, Ys
b. Yy Ss ⇒ YS, Ys, yS, ys
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You are interviewing Fatoumatta about her health and nutrition to support her in her exploration of health. Explain the differences between subjective data and objective data you might collect in a nutrition assessment.
Subjective data is obtained from interviewing a client while objective data is obtained through physical examination.
What are subjective and objective data in nutritional assessment?Subjective data is data which is obtained from the client interview.
It data about food habits and customs, meal patterns, food beliefs, and medical conditions affecting nutritional status.
Objective data is data that is obtained during a physical examination of the client such body weight, muscle mass, blood tests.
Therefore, subjective data is obtained from interviewing a client while objective data is obtained through physical examination.
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What was the problem with this genetic engineering solution
The potential for greater economic disparity and higher human misery, as well as the potential for extensive eugenics programs and dictatorial control over human life, are among the social and political concerns of genetic engineering. In certain situations, moral danger overrides technological risk without a doubt.
What is genetic engineering?Genetic engineering, often known as genetic alteration, is a technique that modifies an organism's DNA using technology developed in labs. This could entail altering a single base pair (A-T or C-G), erasing a section of DNA, or incorporating new DNA.
Millions of workers will be out of work in a few years if multinational businesses decide to replace the national products of Third World nations with their own biotechnology compounds. And the unintended result is guaranteed, not possible, or likely if governments decide to create racial programs and monitoring systems based on genetic engineering advances. The risk is not that the decision-makers underestimated the effects of their decisions, but rather that they act in an unethical manner.
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What traits are shared by all eukaryotic cells?
You are walking home from class after a long day. You get home and realize you weren't paying attention at all to where you were going but you made it home. What type of memory is this?
- semantic
-procedural
-priming
-classical conditioning
Answer:
procedural memory
Explanation:
essentially, you are subconsciously remembering the "procedure" of going home
hope this helps!!
Which of the following is not a condition required for all thunderstorms to
form?
A. Moisture in the lower- to mid-levels of the atmosphere
B. A rotating updraft, or supercell
C. Unstable air
D. A lifting force
If you have 100 apples and you take 30 how many do you have?
Answer:
100 is the answer.........
View attachment. Following his motorcycle accident, what type of memory was K.C. able to form?
A) only semantic memories
B) only episodic memories
C) declarative memories
D) procedural memories
Desenbe how the
exunction of an animal can
cause disrupton in an ecosustem.
Answer:As species go extinct, they are taken out of the food chain. Animals that ate the newly-extinct species have to find new food sources or starve. This can damage the populations of other plants or animals.
Explanation: i hope this helped
5. Draw conclusions: Natural selection is the process by which favorable traits tend to increase in frequency over time. How does this experiment illustrate natural selection
Natural selection is usually defined as the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food of mates, will tend to survive and reproduce in greater number than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations. Charles Darwin and Alfred Wallace developed the theory of evolution by natural selection and jointly presented papers on the subject in 1858. It is based on the finding that some distinctions between people in a group can be passed down across generations. Darwinism, or Darwin's theory, is a theory of evolution created by Charles Darwin stating that all life forms arise, change and develop from a process of natural selection. Natural selection is the process of changes in evolution due to the survival of certain individuals in a species. It is one of the most important parts of the theory of evolution. Darwin's idea provided a straightforward yet persuasive explanation for the diversity of species on Earth. Because various locations have distinct circumstances and survival possibilities, natural selection selects the organisms that are best adapted to that particular environment.
In the human nervous system, what is the gap between neurons called?
OA. Action potential
OB. Nerve impulse
OC. Synapse
OD. Interneuron
SUBMIT
Moving molecules from low to high
concentration requires energy.
This is the opposite of diffusion.
What is this process called?
Answer:
Active transport
Explanation:
Diffusion is when particles (like perfume) spread out everywhere from an area where there is a lot of it to where there is a little to none of it. Active transport is the opposite. A cell for example would use it's own energy to absorb nutrients when it already has quite a lot. Naturally diffusion would make the particles or nutrients go out of the cell because there is a lot of it inside the cell not outside, so active transport is used to absorb as much as the cell can from around it, even when it is full.
Suppose that one of Pasteur's swan neck flasks had broken, such that the neck came off. What would be the likely result?
Maggots would have appeared on the meat
The broth would have remained sterile
Bacteria would not have been isolated in pure culture
The animalcules would have escaped
The liquid would have become contaminated
You have a mixture of bacteria, archaea, fungi, protists, and algae. Which of the following would be most definitive in determining which of these cells are archaea?
Size in a bright field microscope
Structure in a scanning electron microscope
Fluorescence in situ hybridization
Super resolution microscopy
Simple staining
1. The likely result Maggots would have appeared on the meat. Thus. option "A" is correct.
2. Structure in a scanning electron microscope. Thus, option "B" is correct.
What are the different types of cells?The cells can be mainly classified into prokaryotic and eukaryotic. The prokaryotic cells are cells with no nucleus or centrioles but they do have a cell wall, usually one chromosome and complex cilia and flagella. On the other hand, prokaryotic cells have a defined nucleus, multiple chromosomes, and centrioles and some have a cell wall.
Thus, this could be the answer.
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which tissue is responsible for bringing about movement
Answer:
The tissue responsible for movement in our body is the muscular tissue.
Explanation:
Muscular tissue consists of elongated cells, also called muscle fibers.
Hope it helps!
the diagram below represents two cells, x and y which statement is correct concerning the structure labeled A ?
The diagram below (attached image) represents two cells, X and Y.
Which statement is correct concerning the structure labeled A?
A) It is involved in cell communication in cell X but not in cell y.
B) It represents a cell wall in cell X and the cell membrane in cell y.
C) It prevents the absorption of CO2 in cell x and O2 and cell y.
D) It aids in the removal of metabolic waste in both cell X and Y
Cell membrane accomplishes several functions, among them, the removal of cell wastes. Option D. It aids in the removal of metabolic waste in both cell X and Y.
What is the cell membrane?
The cell membrane is a barrier that surrounds the cell content and isolates it from the extracellular space. It is composed of two lipidic layers, proteins, and glucans incrusted in between.
The cell membrane accomplishes many different functions. Among them, we can mention,
Isolation ⇒ It separates the intracellular content from the extracellular space.Protection ⇒ It protects the interior of the cell from any damaging external factor that might affect its correct functioning.Transport ⇒ It allows the selective pass of certain molecules or ions.Substances interchange
⇒ Passive transport → Simple diffusion → through lipids
→ Facilitated diffusion → Assisted by channel
proteins
→ Does not need energy
→ Depends on the molecule size, the concentration
at each side of the membrane, and the charge of
the ions.
→ Occurs in favor of the electrochemical gradient
⇒ Active transport → It does the energy to occur
→ Mediated by carrier proteins
→ Transport big-sized molecules
→ Against the electrochemical gradient
⇒ Endocytosis/Exocytosis → Active transport mediated by vesicles.
Communication ⇒ By emission and reception of substances and molecules, the cell can communicate with other cells. This process is always mediated by membranes and their transport proteins or receptor proteins.
In the exposed example X cell represents an animal cell, and Y cell is a plant cell.
Both the animal and plant cells are eukaryotic. They carry their genetic material in the nucleus and mitochondria. Organelles are located in the cytosol, and both of them are surrounded by a protector cell membrane.
Among the options, the correct one is D. It aids in the removal of metabolic waste in both cell X and Y
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Which of these groups is the smallest level of classification?
A. Class
B. Order
C. Phylum
D. Family
what is cross breeding.write the types of breeding of goats.
Answer:
Cross Breeding is defined as mating two purebred organisms to produce offspring known as a Hybrid. The most common goat breeds include:
Boer goatAmerican PygmySaanen goatDamascus goatAngora goatBeetalSpanish goat
Which compound contains a triple bond
Answer:
Alkynes
Explanation:
a bond between two atoms involving six bonding
electrons instead of the usual two covalent single bond
whats is the law of pascal
In simple terms, the law of pascal is any force applied to a confined fluid is transmitted uniformly in all directions throughout the fluid regardless of the shape of the container.
How are genes and proteins related?
A. Proteins are used to build genes.
O B. Genes contain the code to make proteins.
• C. Proteins are made of parts of genes.
D. Genes and proteins are both made of DNA.
B) Genes contain the code to make proteins. Hope it helps!
Answer:
the answer to the question is A) proteins are used to make genes
A psychologist working from the biological perspective would study all of the following to see how they affect behavior and cognitive processes except __________.
A.
attention
B.
brain cells
C.
genes
D.
the nervous system
Please select the best answer from the choices provided
A
B
C
D
Answer:
the nervous system was this q&a qnswer
Why is it advantageous for a cell to be small
Personal boats and watercraft do not contribute to ocean pollution. t/f
Answer and Explanation:
FALSE
Personal boats and watercraft DO contribute to ocean pollution.
Most water vehicles need fuel to be powered and go through the water. This fuel can sometimes go into the water, polluting the surrounding area.
Watercraft that don't use fuel, but instead are man-powered, can still contribute to ocean pollution. People can bring items such as soda cans, beer bottles, fishing equipment, etc., and any of these items tend to be discarded into the water, leading to pollution and degradation of the ecosystem, harming any wildlife that lives there.
I hope this helps!
#teamtrees #PAW (Plant And Water)
What does heterozygous describe? (2 points)
a
A gene that is not expressed when paired with a dominant allele.
b
A trait produced from two different alleles.
c
A trait produced from two alleles that are alike.
d
A trait hidden by another trait.
The heterozygous describe A trait produced from two different alleles. Thus, option "B" is correct.
What is heterozygous?Tt shows a heterozygous genotype. A genotype shows the set of genes that it carries or was inherited. The capital letter represents a dominant trait and a lower case letter represents a recessive trait.
Your genes are made of DNA. This DNA provides instructions, which determines traits like your hair color and blood type. There are different versions of genes.
The heterozygous describe A trait produced from two different alleles.
Thus, option "B" is correct.
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7. Identify 3 adaptations that result in aerobically trained individuals having greater SV compared to
untrained individuals (I just need 3 adaptations listed). Please and thank you for your help in advance
Greater force of contraction, volume of blood ejected, and cardiac output result in aerobically trained individuals with greater stroke volume compared to untrained individuals
What increases stroke volume?A greater force of contraction consequently increases the volume of blood ejected with each systole (Systolic Volume). Increasing the stroke volume also increases, as a consequence, the cardiac output (CO = VS x HR).
With this information, we can conclude that greater force of contraction, volume of blood ejected, and cardiac output result in aerobically trained individuals with greater stroke volume compared to untrained individuals
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Which hormone allows a woman to produce milk after she gives birth?
1Thyroid-stimulating hormone
2Follicle-stimulating hormone
3Luteinizing hormone
4Prolactin
Prolactin hormone allows a woman to produce milk after she gives birth. Thus, the correct option is D.
What is lactation?Lactation is the process of producing and releasing milk from the mammary glands in breasts. Lactation begins in pregnancy when hormonal changes signal the mammary glands to make milk in preparation for the birth of baby.
It’s also possible to induce lactation without a pregnancy using the same hormones that your body makes during pregnancy. Lactation ends once your body stops producing milk.
Milk ducts increase in size and number when levels of estrogen and progesterone rise. The result is a fuller breast. The mammary glands start to get ready to produce milk.
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During which stage of interphase do cells copy their chromosomes? A. Sphase
B. G, phase
C. G phase D. Go phase
Answer:
A: S phase
Explanation:
Which of these is not a process that can cause speciation?
A. Seasonal migration
B. Asexual reproduction
C. Mate selection
D. Genetic damage
Answer:
Asexual reproduction
Explanation:
Answer:
es la b
Explanation:
reproducción asexual
does this picture on the foot look like it might be gangrene?
maybe but it could also be planter psoriasis.
but for gangrene, the surface of your skin may look normal at first. As the condition worsens, the skin may become pale and then turn other colours such as grey or purplish red. The skin may look bubbly.
Freshwater fish are adapted to live in a hypotonic environment. What would happen to the cells of a freshwater fish if it was put into a hypertonic solution such as seawater? Why?
Answer:
they would burst
Explanation:
