So a change in an organism's DNA can cause changes in all aspects of its life. Mutations are essential to evolution; they are the raw material of genetic variation. Without mutation, evolution could not occur.
Answer:
In science, a variable is any item, factor, or condition that can be controlled or changed
Hox genes are an example of homeobox genes, of which animals and plants have a conserved set. these genes code for signals, signal transduction pathways, and regulatory proteins.
Hox genes are a subset of homeobox genes, which are a class of affiliated genes that determine regions of the body segmentation of an embryo along the head-tail axis of animals. Hox proteins encode and define the features of 'body position', confirming that the right structures develop in the correct areas of the body.
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