Questions
When the genes are completely linked the F2 dihybrid test cross ratio is:
a
1:1:1:1
b
1:1
c
3:1
d
1:2:1
detailed solution
Correct option is B
When the genes are completely linked then crossing cover cannot take place. Therefore, no recombinant will be formed. Let’s understand this with an exampleP: AABB X aabbF1: AaBbTest cross: AaBb x aabbGametes for AaBb are AB and ab.Gametes for aabb: abHence the genotypes of offspring would be AaBb and aabb and the ratio is 1 : 1Talk to our academic expert!
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The tendency of genes to be inherited together as a result of their location on same chromosome is
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