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Trihybrid Cross: AaBbCc X AaBbCc What's the probablity of ABC phenotype? What's the probability of AaBbcc...

Trihybrid Cross: AaBbCc X AaBbCc

What's the probablity of ABC phenotype?

What's the probability of AaBbcc genotype?

Expert Solution

For this question, we need to understand that for dominant allele in genetics we use upper-case letters and for recessive allele lower-case letters.

In order to solve the probability of a specific phenotype and genotype, we need to use a Punnet-square which is a graphical method to visualize all the possible combinations of different types of gametes.

Punnett square for genotypes (we get 64 punnett square):

The phenotype ratio is the following

ABC= 27

aBc=9

AbC=9

abC=3

ABc=9

aBc=3

Abc=3

abc=1

What's the probability of ABC phenotype?

Considering the total of phenotype for ABC is 27 and the TOTAL number of genotypes is 64

We get the probability of P=27/64=0.4218

What's the probability of AaBbcc genotype?

The total number of AaBbcc genotype is 4 and the total number of genotypes is 64.

The probability is P=4/64=0.0625

gladiator answered 2 years ago

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