Question

red color flower cross with a white color flower. find the genotype and phenotype of f1 generation. find out gametes of f2. find out the phenotype of f2. find out the phenotype of f2. phenotype ratio of f2​

Answer 1

Answer:

Let us take both monohybrid and dihybrid cross. This can be explained by taking a specific example of a plant (say pea plant).

In monohybrid cross one trait of plant is taken into consideration.

Let us take a cross between a homozygous tall and homozygous dwarf pea plants.

All the plants in F1 generation will be tall and will have same genotypes, i.e. all plants will be heterozygous tall.

Plants of F1 generation are allowed to interbreed freely among themselves to get F2 generation. The plants in F2 generation will be tall and dwarf in the ration of 3:1. But all tall plants are not similar genotypically. Homozygous tall and heterozygous tall will be in the ratio of 2:1.

Thus in monohybrid cross F1 plants have similar genotype. All are heterozygous tall (Tt).

In F2 generation genotypic ratio will be 1:2:1. , i.e. 1 homozygous tall: 2 heterozygous tall: 1 homozygous dwarf.