What are the genotypes and phenotypes of the F2 generation?

What are the genotypes and phenotypes of the F2 generation?

Thus F2 phenotypic ratio is 9:3:3:1. F2 tall red plants will have 4 genotypes, i.e. homozygous tall homozygous red (TTRR), homozygous tall heterozygous red (TTRr), heterozygous tall and homozygous red (TtRR), and heterozygous tall and heterozygous red (TtRr) will be in the ratio of 1:2:2:4.

What are the phenotypes of the F2 generation?

In the resulting F2 generation, 3/4 showed the dominant phenotype, and 1/4 showed the recessive phenotype. For example, when a round seed line was crossed to a wrinkled seed line, the F1 generation was all round, and the F2 generation showed a phenotypic ratio of 3 round : 1 wrinkled.

What is genotype and phenotype in pea plant?

An organism’s genotype is its specific combination of alleles for a given gene. The phenotype is the physical manifestation of an organism’s allellic combination (genotype). For the pea plants, if the red allele is dominant and the white allele is recessive, only two phenotypes are possible.

What are the genotypes are formed in F2 generation?

So the correct answer is “Phenotypes-4, Genotypes-9”.

What is a F2 generation?

Medical Definition of F2 generation : the generation produced by interbreeding individuals of an F1 generation and consisting of individuals that exhibit the result of recombination and segregation of genes controlling traits for which stocks of the P1 generation differ. — called also second filial generation.

Why is the F2 generation important?

Mendel’s quantitative analysis of the F2 generation led him to conceiving the fundamental principles of heredity, i.e. Law of Segregation and Law of Independent Assortment.

How many genotypes does F2 have?

Therefore, the number of genotypes would be 81 in four pairs of polygenes. Option “E” is the correct answer. Note: There are three types of genotypes: homozygous dominant, homozygous recessive and heterozygous.

How do you get F2 generation?

When the F1 hybrids were allowed to mate, the offspring resulted in plants producing either purple or white flowers. The offspring from the F1 generation comprise the second filial generation (or F2 generation). By definition, the F2 generation is the result of a cross between two F1 individuals (from F1 generation).

Can a homozygous dwarf pea get F2 generation?

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.

How to write the genotypes of the F1 and F2 plants?

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.

What is the phenotype of a tall pea plant?

Phenotype – All of the F₁ generation will be a tall pea plant, since they have the dominant allele from one parent. Remember that the dominant allele always expresses itself. 0 (short) : 4 (tall) If one of these filial plants breeds with another heterozygous plant, they have a 25% chance of having a homozygous recessive offspring.

What is the phenotypic ratio of the F2 generation?

For example, when a round seed line was crossed to a wrinkled seed line, the F1 generation was all round, and the F2 generation showed a phenotypic ratio of 3 round : 1 wrinkled. In plants or animals that cannot self-fertilize, the F2 generation is produced by crossing F1s to each other.