The proportion of the pure breed dominant is expected to be 50%.
Law of Dominance:
In heterozygous organisms, dominant traits conceal the recessive one. In the F1 generation of a pure cross, all the organisms are heterozygous.
Given Here,
A gene with a dominant allele T and recessive allele t,
The cross between pure breed Dominant (TT) and Heterozygous(Tt)
T t
T TT Tt
T TT Tt
In Punnett square, the ratio between pure breed dominant and heterozygous is 1:1.
Therefore, the proportion of the pure breed dominant is expected to be 50%.
To know more about Mendel's cross,
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