Hox genes are regulatory genes in multicellular
animals that code for transcription factors that
determine the basic body plan in a developing
embryo. They act as switches that turn other genes
on and off. Scientists have found that a mutation in a
fruit fly hox gene produces flies with legs instead of
antennae sticking out of their heads. Another hox
gene mutation results in fruit flies with two pairs of
wings instead of one pair. Hox genes affect body
plans by controlling the expression of many other
genes.
Many multicellular animals have the same hox genes.
Which statement is evidence for this claim?
(1 point)
The body plans of complex animals
typically have a large number of
mutations.
There is a wide variety of body plans in
complex animals.
The body plans of complex animals
are very similar to one another.
The body plans of complex animals
change over generations.