A true breeding plant producing red flowers is crossed with a pure plant producing white flowers. Allele for red colour of flower is dominant. After selfing the plants of first filial generation, the proportion of plants producing red and white flowers in the progeny would be

What is the cross between the progeny of $\mathrm{F}_{1}$ and the homozygous recessive parent called? How is it useful?

The first "geneticist'' was

Self pollination between $Tt$ and $Tt$ plants results into genotype ratio of

Definitions / Explanation : Dominant gene & Recessive gene.