For each of questions 1–4, select and support the most appropriate response, AND

Question

For each of questions 1–4, select and support the most appropriate response, AND EXPLAIN why each of the other statements is eliminated.

PLEASE EXPLAIN WHY THEY ARE FALSE, OR TRUE!!!

1. Genomic imprinting is an example of

a. pleiotropy.

b. heterogeneity.

c. epistasis.

d. differential gene expression.

e. a phenocopy.      

2.

Heritability describes the

a.genetic composition for a trait in a particular population.

b. phenotypic variation of a trait in a particular population.

c.variation in a phenotype caused by the environment.

d. proportion of genetic contribution to a trait in a particular population.

e. none of the above.      

Explanation / Answer

1. d differential gene expression

genetic imprinting depends on the sex of the parent that transmitted the gene.If the gene inherited from the father is imprinted,it means it is silenced, therefore the gene inherited from the mother will be expressed.Likewise if the gene inherited from the mother is imprinted,the gene that is inherited from the father will be expressed.

2. b. phenotypic variation of a trait in a particular population.

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