Animal genomes can have huge numbers of genes; in order to understand the control and evolution of the basic body plan it is vital to understand the details of all 10-20,000 genes in the genome and how they act independently of one another.
The breaking down of rock.
Food is made up of cells. those cells contain theyre own DNA without it they wouldnt exist. and when we consume it from other organisms it dies and breaks down and doesnt enter the blood stream
I believe the answer would be <span>The musculocutaneous nerve innervates the flexor </span>muscles<span> of the </span>arm<span>, including the biceps brachii and brachialis </span>muscles<span>. ... Along the anterior of the </span>forearm<span>, the median and ulnar nerves </span>supply<span> nerve signals to the </span>skin<span> and to the flexor </span>muscles<span>of the </span>hand<span> and fingers.</span>
1. The animal can't see what happening behind its head.
2. Head can be moved upto 180 degree angle in most of the animals including humans. But it is not true in case of birds.