Question

Read the passage and answer the following question.
Cytochrome-c is a protein that scientists often use to compare the evolutionary relationships among species. There is one difference in the cytochrome-c sequence between humans and rhesus monkeys. There are ten differences between human and kangaroos.
What can infer about the relationship between these species?

• A. Humans and kangaroos have the same proteins coded in their genes
• B. Humans and kangaroos share a more recent ancestor than humans and rhesus monkeys
• C. Humans are not closely related to either kangaroos or rhesus monkeys.
• D. Humans and rhesus monkeys share a more recent ancestor than humans and kangaroos
• E. Rhesus monkeys and kangaroos share a more recent ancestor than humans and rhesus monkeys.

Answer 1

The correct option is D Humans and rhesus monkeys share a more recent ancestor than humans and kangaroos

The rhesus monkey and humans have the most similar amino acids in the haemoglobin protein. This shows that they share a more recent common ancestor than the other organisms do.