Body Size

question 101

Multiple Choice

Body size

• A) is determined exclusively by heredity.
• B) sometimes reflects evolutionary adaptations to a particular climate.
• C) is primarily determined by environmental factors.
• D) tends to be larger in developing countries.

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Definitions:

Sex-linked Chromosomal Abnormalities

Genetic disorders that are determined by the genes located on the sex chromosomes (X or Y).

Cystic Fibrosis

A genetic disorder that affects the lungs and digestive system, characterized by thick mucus production.

Dominant Allele

A dominant allele is a variation of a gene that will express its trait over another variant, known as the recessive allele, when present in a pair.

Recessive Allele

A variant of a gene that must be inherited from both parents to be expressed in the offspring, in contrast to a dominant allele.