In a Mendelian monohybrid cross, the `F_2` generation shows identical genotypic and phenotypic ratios. What does it tell us about the nature of alleles involved. Justify your answer.

In the F_2 generation of a Mendelian dihybrid cross the number of phenotypes and genotypes are:

The phenotypic ratio in the F_2 generation of a dihybrid cross is :

Work out the cross to show the phenotype and genotype ratio of F_1 and F_2 generations.

What is a test cross? Show a monohybrid test cross using a Punnet square and give the phenotypic ratio.

List various conclusions drawn from a cross between red flowering plant and white flowering plant which give same genotypic and phenotypic ratios of 1:2:1 in F_2 generation.

in dog flower, a red flowered plant is crossed with a white flowered plant. what will be the phenotypic ratio in F_2 generation?

Two genes 'A' and 'B' are linked. In a dihybrid cross involving these two genes, the F_1 heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation?

Light from a sodium lamp(S) passes through two Polaroid sheets P_1 and P_2 as shown in the figure. What will be the effect of the intensity of the light transmitted by P_1 and by P_2 on rotating Polaroid P_1 about the direction of propagation of light? justify your answer in both cases.

Two Antirrhinum plants, one with red flowers and the other with white flowers were crossed. Show the possible genotypes and phenotypes of the progeny of F_1 and F_2 generations using the Punnette square. Explain the pattern of inheritance.