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Dr. Ara B. Dopsis and Dr. C. Ellie Gans are performing genetic crosses on daisy plants. They self-fertilize a blueflowered daisy and grow 100 progeny plants that consist of 55 blue-flowered plants, 22 purple-flowered plants, and 23 white-flowered plants. Dr. Dopsis believes this is the result of segregation of two alleles at one locus and that the progeny ratio is 1:2:1. Dr. Gans thinks the progeny phenotypes are the result of two epistatic genes and that the ratio is 9:3:4.The two scientists ask you to resolve their conflict by performing chi-square analysis on the data for both proposed genetic mechanisms:
1) Calculate the chi-square value for hypothesis of segregation of two alleles at one locus.
2) Calculate the chi-square value for hypothesis of interaction of two epistatic genes.
Trace a route of air from the nares to an alveolus. Name subdivisions of organs where applicable, and discriminate between conducting and respiratory zone structures. how large a force does she exert on the sled.
Assume you are given a primer with a concentration of 1.4 mg/ml, RNA concentration of 0.8 mg/ml, 1M MgCl2, 10mM dNTP mix, 10x buffer, 10 units/ul of reverse transcriptase.
Assume you observe a populatin with 4150 zygotes with the genotype AA, 800 zygotes witht he genotypes Aa, and fifty zygotes with the genotype aa.
What impact has society had (or still have) on the progress of scientific inquiry? How do ethical or moral values affect research and the sharing of scientific information? How can this be resolved.
What characteristic of the synthetases explains this discrepancy. Tina is consuming 15 mg of iron per day. Her RDA is 18 mg. She has no condition warranting a greater-than-normal need for iron. Which of the statements is true about her consumption of..
In our population there are 300 red sea stars, 200 pink sea stars and 500 White Sea stars. How numerous total alleles for sea star colour are in this population.
as calcium and magnesium salts of fatty acids are insoluble in water, how would you expect this to affect the usefulness of soap in hard water.Why would these results happen the way they did.
Assume you performed a gram stain on a sample from a pure culture of bacteria and observed a field of red and purple cocci. Adjacent cell were not always the similar colour. What do you conclude.
In a population with two alleles, A and a, frequency of A is 0.2. Organisms that is homozygous for A die before reaching sexual maturity. In five generations, what will be the frequency of individuals aa with genotypes.
Another dog, Billy, has three restriction sites for this enzyme in his genome. For this problem suppose there is only one chromosome in dogs.
Unattached earlobes are a dominant trait. If A denotes the allele for unattached earlobes, and denotes the allele for attached earlobes, what is (are) possible genotype(s) of a person who has unattached earlobes.
How does the increase in estrogen level correspond to the thickness of uterine lining (endometrium)? Clarify why this makes sense based on the function of estrogen.
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