In Almost All Organisms That Have Been Studied, the Genes

question 21

Multiple Choice

In almost all organisms that have been studied, the genes in Hox clusters:

• A)are arranged in chromosomes in the same order as their products function along the anterior-posterior segments of the embryo.
• B)are expressed in a sequence that is independent of their linear organization along the chromosome.
• C)each contain a unique homeodomain, the products of which are very different among organisms.
• D)are arranged in the chromosomes in a sequence that is independent of the order in which their products function along the anterior-posterior axis of the embryo.
• E)None of the answer options is correct.

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