Question

Following is the information showing recombination percentage of certain genes . Which of these group of genes are inherited together more often

• A. Genes A and B (42%)
• B. Genes C and D (38%)
• C. Genes E and F (20%)
• D. Genes G and H (2.5%)

Answer 1

The correct option is D Genes G and H (2.5%)

Genetic linkage is the tendency of genes that are close together on a chromosome to be inherited together during the meiosis phase of sexual reproduction. Two genetic markers that are physically near to each other are unlikely to be separated on to different chromatids during chromosomal crossover, and are therefore said to be more linked than markers that are far apart. In other words, the nearer two genes are on a chromosome, the lower the chance of recombination between them, and the more likely they are to be inherited together. In this case the lowest frequency of recombination is shown in case of Genes G and H (2.5%) so they have a tendency to get transmitted together into the gametes without undergoing recombination.

So the correct option is 'Genes G and H (2.5%)'.