"Those Who Have To About Biology I Will Give Them Some Knowledge Just For Rs.10"
Posted By: Pradeepa
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Hello , iam telling you about biology ,i.e about
The topic is linkage and recombinant: According to mendel law of inheritance assortment, the gene controlling different characters get assorted independent to each other . It is correct if the genes are present on two different chromosome, but If these genes are present on same chromosome they may or may not not show independent assortment. Morgen carried several dihybrid crosses in drosophila to study that were x-linked . The crosses were similar to the dihybrid crosses carried out by medel in peas .
Chromosomal mapping :-crosaing over is important in locating the genes on chromosome. The genes are arranged linearly on the chromosome. This sequence and the relative distance between various gene is graphically represented in terms of recombination frequencies or cross over value (cov).this is known as linkage map of chromosome. Distance are crossing over units are called centimorgan. The term centimorgan in eukaryotes and map unit in prokaryotes .
Recombination frequency or cross over value =number of recombinant/total number of offspring ×100
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