Question

What is the factor oriented chromosomes appearing in F₁ generation after cross pollination among the tall and short pea plant

Answer 1

Mendel's experiment with plants that were tall (6 feet) or short (6 inches). Mendel had reasoned that each parental plant had a pair of factors that separated during reproduction and that the F1 offspring inherited one factor from each parent. Mendel called the pure breeding("homozygous") parental plants "TT" if they grew tall (i.e., the homozygous dominantgenotype)or "tt" if short (i.e., the homozygous recessive genotype). He could have named the short plants "SS," but instead he used uppercase letters for the trait that dominated in the F1 generationand used the same letter, but lowercase, to describe the recessive trait (the one that disappeared in the F1 generation but reappeared in the F2 generation). Cross-pollinating the TT and tt plants gave hybridswith a mixed (heterozygous) genotype ("Tt"). These hybrids all showed the dominant trait and grew tall.