# Question: What will be the genotype ratio of the cross between AA and AAA?

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## What is the genotype ratio for this cross?

The genotypic ratio for this cross is written 1:2:1. In animals and plants, each gene has 2 alleles or variations, one from each parent. When male and female gametes come together (cross) all the phenotype variations for the offspring are predicted using the Punnett square grid.

## What is the genotypic ratio resulting from the cross of AA and AA?

3. Co-dominance

Co-dominance Case: Cross between two tan skin colors
A a
A AA Aa
a Aa aa
Genotypic ratio: 1:2:1

## What cross will result in a 1 2 1 genotype ratio?

A cross of two F1 hybrids, heterozygous for a single trait that displays incomplete dominance is predicted to give a 1:2:1 ratio among both the genotypes and phenotypes of the offspring.

## What is the ratio of phenotypes in the offspring produced by the cross AA?

This 9:3:3:1 phenotypic ratio is the classic Mendelian ratio for a dihybrid cross in which the alleles of two different genes assort independently into gametes.

1 : 2 : 1.

## What will be the genotypic ratio of the cross DD and DD?

Mendel’s Monohybrid Crosses Thus, they produce four kinds of zygotes: DD, Dd, dD, and dd Because of dominance, three of these genotypes have the same phenotype Thus, in the next generation, called the F2, the plants are either tall or dwarf, in a ratio of 3:1.

## What is the genotypic ratio of a cross between two recessive traits?

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 is the genotype of PP and PP?

There are three available genotypes, PP (homozygous dominant ), Pp (heterozygous), and pp (homozygous recessive). All three have different genotypes but the first two have the same phenotype (purple) as distinct from the third (white).

## What will be the genotypic ratio of F2 generation?

The normal phenotypic ratio in F2 generation is 3:1 and the genotypic ratio is 1:2:1.

## What does a 1 2 1 phenotypic ratio mean?

6. Three phenotypes among the progeny in a 1:2:1 ratio suggest one gene is involved in determining the phenotype, with incomplete dominance as the mode of inheritance (the heterozygote has a different phenotype than either homozygote).

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1 : 2 : 1.

## What is genotypic ratio and phenotypic ratio?

The genotype ratio is the set of genes in our DNA which is responsible for a particular trait. The phenotype ratio is the physical expression, or characteristics, of that trait. For example, two organisms that have even the minutest difference in their genes are said to have different genotypes.

## What are the phenotypic and genotypic ratios of the offspring from the cross?

Capital letters represent dominant alleles and lowercase letters represent recessive alleles. The phenotypic ratios are the ratios of visible characteristics. The genotypic ratios are the ratios of gene combinations in the offspring, and these are not always distinguishable in the phenotypes.

## What is the phenotypic ratio and genotypic ratio in a Monohybrid cross?

A monohybrid cross results in a phenotypic ratio of 3:1 (dominant to recessive), and a genotypic ratio of 1:2:1 (homozygous dominant to heterozygous to homozygous recessive).