Question

draw the checkers board for F1 generation​

Answer 1

its somehow blur but hope it will help you
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Answer 2

"If the allele T is crossbred with t, T stands for tall trees and t stands for dwarf tress,

The phenotype obtained in the P1 or parental generation will be all tall trees, that is, Tt, Tt, Tt and Tt

Now in the F1 or first filial generation, the phenotype will be as follows:

TT, Tt, Tt and tt. So the phenotypic ratio between tall and dwarf trees will be 3: 1

"