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Question:

55) Most genes have many more than two alleles. However, which of the following is also true?

A) At least one allele for a gene always produces a dominant phenotype.

B) Most of the alleles will never be found in a live-born organism.

C) All of the alleles but one will produce harmful effects if homozygous.

D) There may still be only two phenotypes for the trait.

E) More than two alleles in a genotype is lethal.

Answer:

D) There may still be only two phenotypes for the trait.

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Last update by Shanal on 11/06/2013
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Question: 55) Most genes have many more than two alleles. However, which of the following is also true? A) At least one allele for a gene always produces a dominant phenotype. B) Most of the alleles will never be found in a live-born organism. C) All of the alleles but one will produce harmful effects if homozygous. D) There may still be only two phenotypes for the trait. E) More than two alleles in a genotype is lethal.
Answer: D) There may still be only two phenotypes for the trait.