Answer:
the answer is 21 :)
<em>hope this helps</em> ^^
3.Even though there are some dna traces in the mitochondria,it’s won’t really be tested for gcse and mostly the DNAs are found in the nucleus of the cell.
Molecules with similar shapes have similar biological effects, because shape (structure) dictates effects (functions).
This is because the melanocytes are located in the stratum basale. Lighter-skinned people usually have low basal levels, and exposure to UV radiation causes an increase which makes skin darker.