What is the genotype of a homozygous plant?

What is the genotype of a homozygous plant?

A homozygous plant contains either of the following alleles for seed shape: (RR) or (rr). The (RR) genotype is homozygous dominant and the (rr) genotype is homozygous recessive for seed shape.

What is the offspring of homozygous?

One allele for every gene in an organism is inherited from each of that organism’s parents. In some cases, both parents provide the same allele of a given gene, and the offspring is referred to as homozygous (“homo” meaning “same”) for that allele.

What is the genotypic ratio of homozygous dominant to heterozygous to homozygous recessive offspring?

The expected genotype ratio when two heterozygotes are crossed is 1 (homozygous dominant) : 2 (heterozygous) : 1 (homozygous recessive).

What is the genotype of the heterozygous plant?

The genotype of the heterozygous plant is Aa.

What is meant by expected genotypes?

Expected genotypes are a statistical measure of the number of genotypes expected after a genetic cross.

What is the expected genotypic ratio resulting from a homozygous dominant?

The expected genotypic ratio is 1 homozygous dominant : 2 heterozygotes : 1 homozygous recessive.

What are the genotypes of a homozygous and a heterozygous tall plant?

This makes the inheritance easy to observe and follow. What are the genotypes of a homozygous and a heterozygous tall pea plant? DD is homozygous dominant, gives phenotype tall. Dd is heterozygous, also gives the phenotype tall.

How are phenotypes and genotypes related in hybridization?

Mendel’s hybridization experiments demonstrate the difference between phenotype and genotype. For example, the phenotypes that Mendel observed in his crosses between pea plants with differing traits are connected to the diploid genotypes of the plants in the P, F 1, and F 2 generations.

What is the expected phenotype ratio when crossing two heterozygotes?

What is the expected phenotype ratio? The expected genotype ratio when two heterozygotes are crossed is 1 (homozygous dominant) : 2 (heterozygous) : 1 (homozygous recessive). When a phenotypic ratio of 2 : 1 is observed, there is probably a lethal allele.

What are the three possible F 2 generation genotypes?

For the F 2 generation of a monohybrid cross, the following three possible combinations of genotypes result: homozygous dominant, heterozygous, or homozygous recessive.

Can a homozygous organism be at a disadvantage?

An organism that is homozygous for many recessive traits is at a disadvantage. Recessive genes occur more frequently in the F1 generation than do dominant ones. Traits are inherited in discrete units, and are not the results of the “blending” of traits.