Gene is the segment of the DNA which transcribes in the functional product. The graphical representation of the DNA sequences or genes on the chromosome is known as genetic mapping. The genetic mapping of chromosomes helps to determine the linear order and the distance between two genes that are linked to each other along the same chromosome. The percentage of the recombination is the basis for genetic mapping which helps to determine the physical distance between two genes because when two genes are very close to each other, there is less recombination percentage among them while when the genes are far apart from each other, it is most likely to have a recombination within them. Therefore, the distance between two genes i.e. map distance is the number of recombinant offspring divided by the total number of offspring, multiplied by 100 . The unit of distance between two genes is called a map unit (cM). One map unit is equal to 1% recombinant offspring in a test cross.

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Chapter 6.3, Problem 3COMQ

Summary Introduction

Introduction:

Gene is the segment of the DNA which transcribes in the functional product. The graphical representation of the DNA sequences or genes on the chromosome is known as genetic mapping.

The genetic mapping of chromosomes helps to determine the linear order and the distance between two genes that are linked to each other along the same chromosome. The percentage of the recombination is the basis for genetic mapping which helps to determine the physical distance between two genes because when two genes are very close to each other, there is less recombination percentage among them while when the genes are far apart from each other, it is most likely to have a recombination within them.

Therefore, the distance between two genes i.e. map distance is the number of recombinant offspring divided by the total number of offspring, multiplied by 100. The unit of distance between two genes is called a map unit (cM). One map unit is equal to 1% recombinant offspring in a test cross.

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