Why Can't We Measure Genetic Variation in a Population Using

question 14

Multiple Choice

Why can't we measure genetic variation in a population using observable traits (phenotypes) ?

• A)Many traits are encoded by multiple genes.
• B)Phenotypes are not determined by genes.
• C)The environment can also affect the phenotype.
• D)All traits are encoded by a single gene.

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Definitions:

Epididymis

An elongated structure attached to the back of the testes and in which sperm cells mature.

Urethra

The tube that carries urine from the bladder to the outside of the body in both sexes, and also conveys semen in males.

Pelvic Cavity

The body cavity located in the lower abdomen, housing organs such as the bladder, reproductive organs, and rectum.

Vas Deferens

The vas deferens is a long, muscular tube that transports mature sperm from the epididymis to the ejaculatory ducts in preparation for ejaculation.