Humans and chimpanzees share some DNA and protein sequences:

The DNA sequence that can be directly compared between the two genomes is almost 99 percent identical. When DNA insertions and deletions are taken into account, humans and chimps still share 96 percent of their sequence. At the protein level, 29 percent of genes code for the same amino sequences in chimps and humans.

Explanation:

answer; ///(b) it is composed of four protein chains and four heme groups;