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Siamese cats have enzymes that code for dark fur color but are only active in co

ID: 162126 • Letter: S

Question

Siamese cats have enzymes that code for dark fur color but are only active in cooler temperatures. Thus, the tips of a Siamese cat's feet, and tail are dark but not the warmer regions of its body core. This is an example of environmental effects incomplete dominance. If an individual is XY but has pseudohermaphroditism, what happens as they develop? Initially testes develop but they do not produce testosterone, so the individual develops as they a female but is unable to have children. Testes develop but not send the signals to produce external male sex organs. The individual develops like a female externally and a male internally. Initially, testes develop and leads to eternal sex characteristics of a male, but at puberty, cells lose their sensitivity to testosterone and female characteristic begin to develop. Initially, testes develop but can't signal development of male external genitals, so the individual develops as a female. At puberty, the adrenal gland produces functioning testosterone and the individual develops into a male. Oogenesis results in the formation of four egg cells.

Explanation / Answer

(11) alleles

Different versions of a gene are called alleles.

(12)b. Semiconservative

Semiconservative replication of DNA means it would produce two copies of DNA each containing one of the original strands and one new strand

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