C
by using your cells to make copies of themselves
<span>s that a single on off switch can control the whole cluster of functionally related genes; these genes are coordinately controlled (ex: when Ecoli must make tryptophan for itself because the nutrient medium lacks this amino acid all the enzymes for the metabolic pathway are synthesized at one time)</span>
1. hair
2. pore
3. oil gland
4. sweat gland
5. hair follicle
6. blood vessels
Scientist can look at DNA sequences to determine if they are related, A scientist named Darwin proved that all species are related and descended from one common ancestor.
They use there fins to propel themselves
hope this was useful to you
