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Practice problem

Embryological Evidence of Evolution — Summary & Examples

By Sarah Morgan
The image displays a fly with color coded segments matched to specific HOX genes. Gene 1 makes a pink head and neck. Gene 2 makes an orange first leg segment. Gene 3 makes the green middle segment and 2 legs. Gene 4 makes the purple rear segment and leg.

You are studying the Hox genes of a fly. You manage to mutate a fly embryo so that gene 3 is completely deleted. Knowing what you know about HOX genes, what will the fly look like after embryonic development?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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