Use the table to answer the question.
the genotypes of three pea plants for the allele for height. Which prediction about the three plants is the most reasonable?
Plant A Plant B Plant C
tt TT Tt
options:
Plant C will be the shortest.
Plant B and Plant C will have similar heights.
Plant A and Plant C will have similar heights.
Plant A will be the tallest.
Based on the table, Plant A has the genotype tt, Plant B has the genotype TT, and Plant C has the genotype Tt. The allele for height in pea plants follows a dominant-recessive pattern, where the T allele is dominant and the t allele is recessive. Therefore, Plant B, with the genotype TT, would be expected to have the tallest height. Plant C, with the genotype Tt, is heterozygous and would have an intermediate height. Plant A, with the genotype tt, is homozygous recessive and would be expected to have the shortest height.
Therefore, the most reasonable prediction about the three plants is that Plant A will be the shortest.
Based on the information provided in the table, the most reasonable prediction about the three plants is that Plant B will be the tallest. This is because Plant B has the genotype "TT", which means it has two dominant alleles for height. The genotype "TT" typically results in tall plants, whereas the genotype "tt" (as seen in Plant A) typically results in short plants, and the genotype "Tt" (as seen in Plant C) typically results in an intermediate height. Therefore, Plant A will be the shortest, Plant C will have an intermediate height, and Plant B will be the tallest.
To answer the question, we need to understand how the alleles for height in pea plants are inherited. In this case, "T" represents the tall allele and "t" represents the short allele.
Looking at the genotype table, we observe the following genotypes for the plants:
- Plant A: tt (two short alleles)
- Plant B: TT (two tall alleles)
- Plant C: Tt (one tall allele and one short allele)
Based on the information provided, we can make predictions about the height of these plants:
1. Plant C will be the shortest: Since Plant C has one tall allele (T) and one short allele (t), there is a chance that it may express the short allele and be short in height. Therefore, this prediction is reasonable.
2. Plant B and Plant C will have similar heights: Plant B has two tall alleles (TT), which means it will most likely express the tall allele and be tall in height. Plant C, on the other hand, has one tall allele and one short allele (Tt), so it may express either the tall or short allele. Although there is a possibility that Plant C might express the tall allele, it is also possible for it to express the short allele. Thus, Plant B and Plant C may have different heights, making this prediction less reasonable.
3. Plant A and Plant C will have similar heights: Plant A has two short alleles (tt), which indicates that it will most likely express the short allele and be short in height. Plant C has one tall allele and one short allele (Tt), making its height outcome uncertain. While there is a possibility that Plant C might express the short allele and have similar height to Plant A, it could also possibly express the tall allele. Therefore, this prediction is less reasonable as well.
4. Plant A will be the tallest: Since Plant A has two short alleles (tt), it is highly likely to express the short allele and be short in height. Hence, this prediction is not reasonable.
Considering all the options given, the most reasonable prediction is that Plant C will be the shortest because it has the possibility to express the short allele.