Some offsprings look like their parents because we all have different genes. Different combinations of genes for one of these traits create a bunch of different physical attributes. Even though we get all our DNA from our parents, each of us has a unique combination of genes.
Answer:
Pentose sugar
Explanation:
phosphate and pentose sugar are the backbone of a dna strand
There is no pigment in the brain, so it is in it's natural colour, grey.
