Answer:
DNA structure DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).
Explanation:
Answer: i think its 80 million years ago
Explanation:
I think the first one is right !.... but the for the other one it's B .
Answer:
A
Explanation:
the sequence of genes on a DNA molecules contain the instructions that code for protein
<span>settable solids, i hope this helps </span>