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Help with this genetics problem - about alleles?
For 20 loci each with 2 alleles each:?
How many haplotypes are possible?
How many diploid genotypes are possible?
Your help is greatly appreciated! Thanks
This is a review for a test - not homework!!
2 Answers
- JonahLv 78 years agoFavorite Answer
Let me pretend there were only 3 loci, with 2 alleles each. I'll call them A, a, B, b, C and c.
Then there would be 8 possible haplotypes:
ABC, ABc, AbC, Abc, aBC, aBc, abC, abc
That is 2 x 2 x 2, or 2 ^3.
If there were 20 loci, the answer would be 2^20.
If there are eight possible haplotypes, there are 8 x 8 or 64 possible diploid genotypes.
That is because I can match any of the eight possibilities with any of the eight possibilities (including itself).
2^20 x 2^20 = 2^40
- vachonLv 44 years ago
you utilize a attempt table to determine this out! A a a Aa aa a Aa aa Aa = heterozygous determine. aa= commonplace canines (homozygous) 50% would be aa (commonplace) 50% would be Aa (heterozygous) Fraction = a million/2