Question

A homozygous tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous dwarf (t) plant bearing white (r) flowers.

Give the genotype and phenotype of the plants of $F_1$ generation.

Answer 1

The genotype of the homozygous dominant plant is TTRR, thus the gametes produced by this plant will contain TR genes. The genotype of the homozygous recessive plant is ttrr, thus the gametes produced by this plant will contain tr genes. Thus, the genotype of F${}_1$ generation will be TtRr. The phenotype ofF${}_1$ generation will be tall plant with red coloured flowers.