a cross is performed between plant with genotype TtYy and a plant with genotype

Question

a cross is performed between plant with genotype TtYy and a plant with genotype TtYy. If the two genes independently assort, what is the probability expressed as a decimal that the offspring will be homozygous for gene T and homozygous for gene Y a cross is performed between plant with genotype TtYy and a plant with genotype TtYy. If the two genes independently assort, what is the probability expressed as a decimal that the offspring will be homozygous for gene T and homozygous for gene Y a cross is performed between plant with genotype TtYy and a plant with genotype TtYy. If the two genes independently assort, what is the probability expressed as a decimal that the offspring will be homozygous for gene T and homozygous for gene Y

Explanation / Answer

TtYy *TtYy male

The offspring will be homozygous for gene T and homozygous for gene Y means it should be TTYY

The probability that offspring will be homozygous for gene T (TT) = 4/16 = 1/4

The probability that offspring will be homozygous for gene Y (YY) = 4/16 = 1/4

The probability that the offspring will be homozygous for gene T and homozygous for gene Y = 1/4*1/4 = 1/16 = 0.0625 (ans)

or simply from punnet square we can say that the probabiloty of TTYY = 1/16 = 0.0625 (ans)

female TY Ty tY ty TY TTYY TTYy TtYY TtYy Ty TTYy TTyy TtYy Ttyy tY TtYY TtYy ttYY ttYy ty TtYy Ttyy ttYy ttyy

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