Question

which genotype belongs to an offspring that is homozygous recessive for both traits?what is the probability of that genotype?

Answer 1

The genotype of the offspring would be homozygous recessive.  If you used pea pod height for example, the parents' traits would be (T=tall t=short) tt and tt.  After you complete your Punnet Square the offspring would be 100% short.

Answer 2

Recessive allele refers to the genetic code that does not express itself in the presence of the dominant allele. It can be expressed only in purebred conditions.

What is a purebred recessive allele?

• Purebred recessive allele refers to the genetic code in which both the alleles are present in recessive conditions. The genotype for both the traits can be explained in purebred conditions only.

• For instance, in a dihybrid cross, the recessive purebred allele for green and wrinkled seeds will be yyrr (Green and Wrinkled).

Thus, the probability of the genotype if following mendelian ratio will be 1.

Learn more about dihybrid cross here:

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