Use the table to answer the question.

Question

Plant A Plant B Plant C
tt TT Tt
The table shows the genotypes of three pea plants for the allele for height. Which prediction about the three plants is the most reasonable?

(1 point)
Responses

Plant A will be the tallest.

Plant A and Plant C will have similar heights.

Plant B and Plant C will have similar heights.

Plant C will be the shortest.

Answer 1

To determine which plant is likely to be the tallest, we need to consider the genotypes of each plant in relation to the dominant and recessive alleles for height.

• Plant A has the genotype tt, which is homozygous recessive and typically results in shorter plants.
• Plant B has the genotype TT, which is homozygous dominant and generally leads to the tallest plants.
• Plant C has the genotype Tt, which is heterozygous and will also usually be tall, but not as tall as Plant B.

Based on this information:

• Plant A will be the shortest due to being tt.
• Plant B will be the tallest due to being TT.
• Plant C will have a height that is similar to Plant B but not as tall.

Considering the response options, the most reasonable prediction is that Plant B and Plant C will have similar heights (though Plant B will be taller). However, the phrasing of the answer suggests we are focusing on their relative heights, and both are likely taller than Plant A.

So, the best answer is:

Plant B and Plant C will have similar heights.