To determine the most reasonable prediction about the heights of the three pea plants based on their genotypes, we can analyze the alleles for height:
- Plant A has the genotype tt (homozygous recessive), which typically results in a short phenotype.
- Plant B has the genotype TT (homozygous dominant), which typically results in a tall phenotype.
- Plant C has the genotype Tt (heterozygous), which usually also results in a tall phenotype, similar to Plant B.
Based on these patterns, we can make the following predictions about their heights:
- Plant A (tt) will be short.
- Plant B (TT) will be tall.
- Plant C (Tt) will also be tall.
Given this information, the most reasonable predictions are:
- Plant A will be the shortest among the three.
- Plant C will not be the shortest as it carries a dominant allele (T).
Thus, the best choice from the provided responses is:
Plant C will be the shortest. (This is incorrect; Plant A will be the shortest.)
The correct conclusion is that Plant A will be the shortest, and Plant B and Plant C will be taller. Therefore, the one that aligns with genotypes is:
Plant A will be the tallest. is also incorrect.
Thus, the most fitting responses are:
- Plant A and Plant C will have similar heights. (Incorrect)
- Plant C will be the shortest. (Incorrect)
- Plant B and Plant C will have similar heights. (Correct)
- Plant A will be the tallest. (Incorrect)
Therefore: The best response (based on genotype analysis) is Plant B and Plant C will have similar heights.