A heterozygous y'all yellow plant is crossed with a homozygous short green. What will be the genotypes and phenotypes, and probabilities of the first generation?

genotypes Tt Yy                ,            Ttyy

phenotypes tall and yellow  ,  tall and green

probanility  1/2     ,                            1/2

Explanation:

symbols  T= tall,t= short, Y = yellow, y = short

parental phenotype tall heterozygous yellow   x    short homozygous green

parental genotype     TTYy                                              ttyy

meiosis                  

gametes                   TY        Ty                                            ty

random fertilisation

offspring genotype       TtYy               and                 Ttyy

offspring phenotype      tall and yellow                  tall and green

probability                           1/2                                           1/2

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