Which one of the following statements about homeotic, or Hox, genes is not correct?
A. Drosophila contain 8 Hox genes arranged
in two clusters, the Antennapedia complex
and the Bithorax complex.
B. Hox genes are arranged in order according
to their relationship with the anterior-posterior
segmentation.
C. Timing of expression corresponds to
chromosomal order and location of
expression. For example, anterior genes "turn
on" earlier compared to those expressed in
the posterior.
D. The linear order of Hox genes along the
chromosome, the anterior-posterior
orientation of the embryo, and timing of
expression for the genes in Hox clusters is
observed only in Drosophila.
E. Many of the genes in the mammalian Hox
clusters have redundant or overlapping
functions.
D
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Outline a simple experiment she can perform to address this question.
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Indicate whether the statement is true or false