Question

In the doug langur the duplication of one of its genes resulted in the adaptation to a diet of leaves and the monkeys getting their energy from their gut microbiota that ferment the leaves. What is the proximate and ultimate cause of this adaptation?

Answer 1

Answer: Thousand of human genes were once copies of other genes that have over time developed mutattion and drifted away from the originals. According to the theory of gene duplication. Researcher say gene duplication is behind the uniquly efficient way douc langur digest their dinner.After a gene for an enzyme was duplicated millions of years ago,the species developed a second gastric enzyme that ultimately turbo charged its ability to draw nutrients from leaves.

Most monkeys eat fruits , vegetables even meat but colobines primarily eat leaves which is difficult to digest.in the gut of the colobine, a bacteria is present , digest leaves and take in the nutrients they release.

Duplication is believed to be importantfor generating new genes and important for adaptation of organisms to the enviornment but it has nnot been shown clearly how's this work.