Question

question 10
2.5 points
skin color is controlled by six separate genes, making the inheritance of skin color a good example of_.
a codominance.
b incomplete dominance.
c multiple - allele inheritance.
d polygenic inheritance.
question 11
2.5 points
up to 40% of human height can be attributed to environmental rather than genetic factors; thus, we call height inheritance is _
a polygenic.
b codominant.
c recessive.
d multifactorial.
e dominant.

Explanation:

For Question 10, polygenic inheritance involves multiple genes influencing a trait, and skin - color is controlled by six separate genes, fitting this pattern. Codominance is when both alleles are fully expressed in a heterozygote, incomplete dominance is a blend of alleles, and multiple - allele inheritance refers to more than two alleles for a gene locus, none of which apply here.
For Question 11, multifactorial inheritance means that a trait is influenced by both genetic and environmental factors. Since up to 40% of human height can be attributed to environmental factors, height inheritance is multifactorial. Polygenic refers only to multiple genes, codominant, recessive, and dominant are related to allele expression patterns and not to environmental influence.

Answer:

Question 10: D. polygenic inheritance
Question 11: D. multifactorial