Question

What is the recombination frequency?

Answer 1

DNA recombination is the process of exchange of genetic material either between multiple chromosomes or between different regions of the same chromosome. This process is mediated by homology; homologous regions of chromosomes line up in preparation for exchange. While frequency can be defined as the number of times something happens in a particular period.

Complete answer:
Mating of two individuals resulting in the combination of genetic material in the offspring is known as a genetic cross. There are four types of crosses which are:
1. Monohybrid cross: In this type of cross, the parent organisms differ only from one characteristic. In this cross there is a fifty-fifty chance of the offspring to get dominant or recessive character.
2. Dihybrid cross: In this type of cross, the parent organisms differ from two characteristics which you want to examine. This pattern of inheritance is somewhat more complicated as compared to monohybrid cross.
3. Backcross: In this type of cross, two lines are crossed to yield a hybrid. Now, selected individuals from progeny are crossed with one of the parents. It can be very valuable to hybridize a high yielding variety to another variety to produce desired traits.
4. Test cross: In this type of cross, an organism is crossed with another organism of known genotype. It helps scientists to find out more about an organism with an unknown combination of genes.
DNA recombination is the process of exchange of genetic material either between multiple chromosomes or between different regions of the same chromosome. This process is mediated by homology; homologous regions of chromosomes line up in preparation for exchange.

Recombination Frequency can be defined as a number which describes the proportion of recombinant offspring produced in genetic cross between two organisms.

Note:
Process of exchange of genetic material either between different regions of the same chromosome or between multiple chromosomes is DNA recombination. There are four types of genetic cross such as Monohybrid cross, Dihybrid cross, Back cross,Test cross. Proportion of recombinant offspring produced in genetic cross is known as Recombination Frequency.