Question

Which of the given statement is incorrect about the observations made with regard to gene order?

(a) Order is highly conserved in closely related species

(b) Order in closely related species becomes changed by rearrangements over evolutionary time

(c) As more and more rearrangements occur, there will no longer be any correspondence in the order of orthologous genes on the chromosome of one organism with that of a second organism

(d) Order is less conserved in closely related species

I have been asked this question in an international level competition.

This question is from Functional Classification of Genes topic in chapter Genome Analysis of Bioinformatics

Answer 1

Correct option is (d) Order is less conserved in closely related species

The explanation is: Order is more conserved in closely related species. Another observation is that the groups of genes that have a similar biological function tend to remain localized in a group or cluster.