Question

The frequency of crossing over between any two linked genes is?

1) higher if they are recessive
2) different between males and females
3) determined by their relative dominance
4) the same as if they were not linked
5) proportional to the distance between them

Answer 1

When genes are close together on the same chromosome, they are considered linked and tend to be transmitted together. The frequency of crossing over between two linked genes increases with the distance between them.

Step-by-step explanation:

When two genes are located in close proximity on the same chromosome, they are considered linked, and their alleles tend to be transmitted through meiosis together. The closer together two linked genes are, the less likely a crossover event will occur between them, resulting in a higher recombination frequency. As the distance between two genes on a chromosome increases, the probability of crossovers between them also increases, and the genes behave more like they are on separate chromosomes.