Personality variations among siblings is due to
A) germline mutation.
B) dominant-recessive inheritance.
C) polygenic inheritance.
D) homozygotic inheritance.

Question

Quizplus · Accepted Answer

Personality variations are polygenic, meaning they are influenced by multiple genes. This can lead to different combinations of alleles being inherited by siblings, resulting in variations in their personalities. Germline mutations and dominant-recessive inheritance may cause genetic disorders or traits, but they do not explain variations in normal personality traits among siblings. Homozygotic inheritance refers to the inheritance of two copies of the same allele from both parents, which may result in the expression of a recessive trait, but does not explain personality variations.

Personality Variations Among Siblings Is Due to