Question

Which of the given statement is incorrect?

(a) In a given organism or species, genes are found in a given order that is maintained on the chromosomes from one generation to the next

(b) Genes with a related function are frequently found to be distorted on a chromosome

(c) A possibility is that there is genetic variation (alleles) within each gene in a cluster of a given species and that only certain allelic combinations of different genes are compatible

(d) Clustering of related genes presumably provides an evolutionary advantage to a species

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

My enquiry is from Functional Classification of Genes topic in section Genome Analysis of Bioinformatics

Answer 1

Right option is (b) Genes with a related function are frequently found to be distorted on a chromosome

To elaborate: Genetic analysis has revealed that genes with a related function are frequently found to be clustered at one chromosomal location. As genome-by-genome comparisons of the chromosomes of related species are made and the rearrangements are discovered, a further challenge to computational and evolutionary biologists is to estimate the number and types of rearrangements that have occurred and also to determine when they occurred. For example, a comparison of the mouse and human chromosomes reveals many rearrangements.