Consider Figure B4

Multiple Choice

Consider figure b4.2. In the text Analyze this figure and select which interpretation below is consistent with the findings.

A) Several genes in fruit flies appear to have duplicated somewhere in their ancestral lineage
B) Nematodes express a greater variety of Hox genes than cephalochordates
C) Each organism contains at least one of each known Hox gene, though some contain duplicates
D) Sea urchins are round; therefore they do not require as many Hox genes to direct development