Humans carry a variety of nonfunctional genetic sequences ca

Humans carry a variety of non-functional genetic sequences, called processed pseudogenes, in their DNA. We can estimate how long ago these sequences first appeared in the genomes of our ancestors. In humans, processed pseudogenes include the three options below. Which of these would be least widespread among other primate species?

Solution

Humans processed pseudo genes into

1) alpha enolase psi 1

2)AS psi 7

3)CALM 2 psi 3

The oldest one among these is CALM .The primates did not split all time from our common ancestor.Some split earlier than others so if you go for oldest option we can say that even primate species that split from common ancestor still have the gene.