Why did Galton modify the quincunx? a. Because the distribution of a trait (e.g., height) in offspring is more widespread than that of their parents. b. Because the distribution of a trait (e.g., height) in offspring has a higher mean relative to that of their parents. c. Because the distribution of a trait (e.g., height) in offspring is less widespread than that of their parents. d. Because the distribution of a trait (e.g., height) in offspring remains constant relative to that of their parents.

suppose two alleles exist for gene A in a population of fruit flies.  Alleles "A" is dominat over allele "a".  Suppose the frequency of the "A" allele = 0.4, calculate the expected frequency of allele "a" - give answer as a decimal.

Why does sickle cell anemia remain more prevalent in Sub-Saharan Africa than in the rest of the world? a. Reduced access to medical facilities presidposes Sub-Saharan Africans to an increased chance od disease. b. The prevalence of malaria in Sub-Saharan Africa provided a selective advantage to individuals who were heterozygous. c. Infection with malaria provides a selective disadvantage to individuals who are heterozygous for the sickle cell allele. d. People of African ancestry are genetically predisposed to carry the sickle cell allele

Why are monozygotic twins genetically identical, whereas dizygotic twins share only 50% of their genes on average?a. Monozygotic twins tend to look more similar.b. Monozygotic twins develop from two different eggs fertilized by the same sperm, whereas dizygotic twins develop from two eggs fertilized by two different sperm.c. Monozygotic twins develop from a single egg fertilized by one sperm, whereas dizygotic twins develop from a single egg fertilized by two different sperm.d. Monozygotic twins develop from a single egg fertilized by a single sperm, whereas dizygotic twins develop from two eggs fertilized by two different sperm.

In fruit flies, red eyes (E) are dominant to white eyes (e). Cross two heterzygotes.  a. What are the possible genotypes for red eyes ? b. What are the possible genotype(s) for white eyes ?

Which statement about the pattern of inheritance for a recessive X-linked allele is true? A. Unaffected parents can produce daughters who are affected. B. Unaffected parents can have sons who are affected and daughters who are carriers. C. Unaffected fathers can be carriers. D. Affected parents do not produce affected children. E. Every affected person has an affected parent.

We observe disruptive selection when the extreme values of a trait such as light and dark coat colors are selected for instead of a medium coat color? A. true  b. False

A. How does the linkage of traits impact selection decisions in a breeding plan?   B. How are molecular markers useful for making selection decisions in the face of linkage drag?