Which of the following gametes are produced by an individual with genotype $RrYy$?

To determine the different types of gametes produced by a pea plant with the genotype $AaBb$,with which genotype should it be crossed?

Pure homozygous offspring in a dihybrid cross in the ${F_2}$ generation will be:

The phenotypic ratio of a dihybrid test cross performed by Mendel is ....

If the genotype of an organism for two pairs of genes is represented by $AaBb$,then the possible genetic combinations of gametes after meiosis will be:

In peas,tallness is dominant over dwarfness and red colour of flowers is dominant over the white colour. When a tall plant bearing red flowers was pollinated with a dwarf plant bearing white flowers,the different phenotypic groups were obtained in the progeny in numbers mentioned against them:
Tall,Red $= 138$
Tall,White $= 132$
Dwarf,Red $= 136$
Dwarf,White $= 128$
Mention the genotypes of the two parents and of the four offspring types.