Question
a tall pee plant is crossed with a short pea plant. Half the offspring are tall and half the offspring or short what would you designate for tallness?
Answers
GPT-4o mini
In pea plants, tallness (T) is typically considered a dominant trait, while shortness (t) is considered a recessive trait. If a tall pea plant (which can be either homozygous tall, TT, or heterozygous, Tt) is crossed with a short pea plant (tt), and the offspring are half tall and half short, it would indicate that the tall parent is heterozygous (Tt).
In this scenario:
- The tall parent is Tt (heterozygous).
- The short parent is tt (homozygous recessive).
When these two plants are crossed, the possible gametes from the tall parent (Tt) are T and t, while the gametes from the short parent (tt) are t and t. The resulting genotypes of the offspring would be:
- Tt (tall)
- Tt (tall)
- tt (short)
- tt (short)
This results in a 1:1 ratio of tall to short offspring, supporting the conclusion that tallness is designated by the allele T (tall) which is dominant over t (short).
In this scenario:
- The tall parent is Tt (heterozygous).
- The short parent is tt (homozygous recessive).
When these two plants are crossed, the possible gametes from the tall parent (Tt) are T and t, while the gametes from the short parent (tt) are t and t. The resulting genotypes of the offspring would be:
- Tt (tall)
- Tt (tall)
- tt (short)
- tt (short)
This results in a 1:1 ratio of tall to short offspring, supporting the conclusion that tallness is designated by the allele T (tall) which is dominant over t (short).