Question

What do you mean by a linkage group?

• A. A group comprising all the genes located at the same distance from the centromeres of their respective chromosomes
• B. A group comprising the genes located at the terminal positions of their respective chromosomes
• C. A group comprising all the genes located on a single chromosome
• D. A group comprising of genes located on the sex chromosomes only

Answer 1

The correct option is C A group comprising all the genes located on a single chromosome

Linkage is the phenomenon in which two or more genes are located on the same chromosome and within such distances that they are considered as a single unit and inherited together. Thus a linkage group comprises all the genes located on a single chromosome.
Genes located on the sex chromosomes are known as sex linked genes.
No special term has been used for a group of genes located equidistant from centromere or at terminal positions of their respective chromosomes.