Which of the following can be a disadvantage when analyzing human pedigrees? (Explain) A. Many human conditions are not lethal. B. There are many conditions coded by a single locus. C. Human are diploid. D. It can be difficult to know if a condition traces many generations back in a pedigree.

What is the most likely order of the linked genes R, S, and T if the distance between R and S is 22 cM, the distance between S and T is 8cM, and the distance between R and T is 14 cM?   A. R S T       B. T R S       C. Cannot be determined     D. S T R

In the lab, you discover two yeast haploid mutants that cannot produce arginine. You cross them together and the resulting diploid produces arginine. If producing arginine is the wild type phenotype, what can you definitively conclude? A.The haploid strains have identical mutations in the same genes. B.The haploid strains have identical mutations in different genes. C.The haploid strains have mutations in different genes. D.The haploid strains have mutations in the same gene. E.The haploid strains must belong to the complementation group encoding the first enzyme in the biosynthetic pathway.

In a hypothetical population, matings involving two individuals heterozygous for the phenylketonuria allele on chromosome 12 result in 10% of the offspring showing the effects of the disease. This percentage arises because:   A. the trait has pleiotropic effect   B. the trait assorts independently   C. the trait has low expressivity   D. the trait has only partial penetrance   E.  the trait is sex-influenced

A poultry grower has 2 breeds of chicken, averaging 9 and 5 lbs. inweight. The F1 of the cross between is quite uniform, averaging 7lbs. Of the F2 progeny, 0.4% is as heavy as either parent. a. How much does each effective allele contribute to weight? b. What is the number of polygenes pairs involved in thesecrosses? c. If only those with an average weight of 6-8 lbs. are marketable, whatpercentage of the offspring will yield profit for the grower?

You are interested if whether several genes of a certain species of beetle assort independently. So, you conduct several generations of matings, and after you have collected all your data, you are ready to analyze your results. You conduct a Chi2 test to test your hypothesis. You have 6 groups and calculate a Chi? = 13.22. Given that the critical value at 0.05 level of %3D significance = 11.07 at df = 5, %3D (A) State your null hypothesis. (B) Should you accept or reject your null hypothesis? (C) Why did you arrive your decision in (B)?

This pedigree below represents a disease that is very rare in the human population and completely penetrant. Answer the two questions below. a.) What are the two possible modes of inheritance? b.) Which one is most likely (probable)? Briefly explain your answer for part b. Eor the toplhar press Al T+F10 (PCL ar ALT+EN+F10 (Mar)