If two tall pea plants (Tt) are crossed and the gene for height exhibits incomplete dominance, what will be the height of the offspring?

If two tall pea plants (Tt) are crossed and the gene for height exhibits incomplete dominance, what will be the height of the offspring?

• A. 1/4 tall, 1/2 short
• B. 1/2 tall, 1/4 short
• C. 1/4 tall, 1/2 intermediate, 1/4 short
• D. All tall

Answer: (C)

The genetic scenario presented describes a situation where two tall pea plants, both with the genotype Tt, are crossed, and the gene for height exhibits incomplete dominance. In this case, incomplete dominance means that neither allele is completely dominant over the other. Here, the T allele (tall) and the t allele (short) will blend to produce an intermediate phenotype. When crossing the two Tt plants, the possible gametes produced will be T and t. The resulting combination of offspring can be illustrated through a Punnett square, which will show the following possible genotypes from the cross: - TT (homozygous tall) - Tt (heterozygous, but tall) - tT (also heterozygous, but tall) - tt (homozygous short) In terms of phenotypes, with incomplete dominance, the TT individuals will be tall, the Tt individuals will be tall but could show a slightly different phenotype characterized as intermediate, and the tt individuals will be short. From the combinations generated by this Tt x Tt cross, the resulting ratio of phenotypes is: - 1 TT (tall) - 2 Tt (intermediate) - 1 tt (short) The

The genetic scenario presented describes a situation where two tall pea plants, both with the genotype Tt, are crossed, and the gene for height exhibits incomplete dominance. In this case, incomplete dominance means that neither allele is completely dominant over the other. Here, the T allele (tall) and the t allele (short) will blend to produce an intermediate phenotype.

When crossing the two Tt plants, the possible gametes produced will be T and t. The resulting combination of offspring can be illustrated through a Punnett square, which will show the following possible genotypes from the cross:

• TT (homozygous tall)

• Tt (heterozygous, but tall)

• tT (also heterozygous, but tall)

• tt (homozygous short)

In terms of phenotypes, with incomplete dominance, the TT individuals will be tall, the Tt individuals will be tall but could show a slightly different phenotype characterized as intermediate, and the tt individuals will be short.

From the combinations generated by this Tt x Tt cross, the resulting ratio of phenotypes is:

• 1 TT (tall)

• 2 Tt (intermediate)

• 1 tt (short)

The