Let P = purple flowers and p = white, and T = tall plants and t = dwarf. What combinations of gametes could be produced by a heterozygote for both the traits?

An individual is heterozygous for two traits, flower color and stem height, with a PpTt (dihybrid) genotype and a phenotype showing the dominant traits, purple flowers and tall stem.

The genes of this individual for the above-mentioned traits contain different alleles, and taking into account the independent segregation of characters, the alleles present in its gametes could be:

Both dominant alleles: PT
One dominant and one recessive allele Pt or pT
Both recessive alleles: pt

Therefore, the traits of its offspring will depend on the alleles for those traits present in the gamete to which they are combined.

samueladesida43 samueladesida43 · Answer 2 · 2021-11-16T12:33:53+01:00

The combinations of gametes that could be produced by a heterozygote for both of the traits is PT, pT, Pt, and pt.

In a gene, two alleles are responsible for the genotypic appearance. According to Gregor Mendel, one allele called dominant allele masks the phenotypic expression of the other allele called recessive allele.

An heterozygous genotype is the genotype that contains two different alleles of the same gene.

For example, in this question, P represents purple flowers while p represents white and T represents tall plants while t represents dwarf.

This means that a heterozygous combination for both genes will look like: PT, pT, Pt, and pt..

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