In genetics, the use of chequer board was done by

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:

Mating of an organism to a double recessive in order to determine whether it is homozygous or heterozygous for a character under consideration, is called

The cross used to ascertain whether the plant is homozygous or heterozygous is

Mendel's principle of segregation was based on the separation of alleles in the garden pea during