In hybridization, $Tt × tt$ give rise to the progeny of ratio

The production of gametes by the parents, formation of zygotes, the $\mathrm{F}_{1}$ and $\mathrm{F}_{2}$ plants, can be understood from a diagram called:

Genes which code for a pair of contrasting traits are known as ……..

When a gene exists in more than one form, the different forms are called

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