Question
Explain what would be the result if a ‘tall’ pea plant (dominant- TT) is crossed with a dwarf one (recessive – dd) up to the F₁ generation.
Answer
If a ‘tall’ pea plant (dominant – TT) is crossed with a dwarf one (recessive – dd) up to the F₁ generation, all the F₁ generation plants would be heterozygous tall (Tt) as T is dominant over d. This is because each parent will contribute one allele to their offspring, and the dominant allele (T) from the tall plant will mask the recessive allele (d) from the dwarf plant. The genotype of the F₁ plants will be Tt, while their phenotype will be tall because of the presence of at least one dominant allele.
