Biology, asked by khalid12333, 1 year ago

In a trihybrid cross what would be the chance of getting progeny with atleast one dominant alleles in f2 generation

Answers

Answered by AR17
0

Hey there!

Here's your answer.

In every hybrid self-cross (F1 cross), there is only one progeny in F2 generation which has all the recessive alleles.

(You can cross check this using punnett square)

So, if you consider the following cross

AaBbCc × AaBbCc

There will be only one progeny whose genotype will be aabbcc.

Total number of progenies in the F2 generation of trihybrid cross = 4ⁿ = 4³ = 64.

If only one has all recessive alleles, then the rest 63 will have atleast 1 dominant allele.

Therefore, the chance of getting atleast one dominant allele in F2 generation of trihybrid cross is = 63/64

Hope that helps.

Thanks.

Answered by shailendrachoubay456
0

Trihybrid Cross

Explanation:

  • In each hybrid self-cross (F1 cross), there is only one progeny in F2 generation which has all the recessive alleles
  • There will be only one progeny whose genotype will be aabbcc. Complete number of offspring in the F2 age of trihybrid cross = 4ⁿ = 4³ = 64  
  • The parental generation (P) is the main arrangement of parents crossed.The F1 (first dutiful) generation comprises of all the offspring from the parents
  • The F2 (second obedient) generation consists of the posterity from permitting the F1 people to interbreed
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