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What does genotypic ratio mean?

Updated: 8/9/2023
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9y ago

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genotype means genetic make up. it can give the information about the parents wether they were homozygous or heterzygous

Answer (Improved)A genotypic ratio is the proportion of genotypes found in individuals after a cross. For example, consider a cross between two heterozygous individuals for trait A:

Aa X Aa

The result is a 1:2:1 ratio for the genotypes AA, Aa, and AA respectively. Put another way, if the parents had 100 offspring, 25 would be expected to have the genotype AA, 50 the genotype Aa and 25 the genotype AA.

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12y ago
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11y ago

The genotypic ratio is the ratio based on the genotypes of the possible offspring.For example, lets say that a mother that has brown hair marries with someone with blond hair. lets say the mother is heterozygous(different different allelel that appear in the same locus of sister chromatids) Bb (B=brown,b=blond), and the father is also heterozygous Bb. if you put them in a Punnett square, you will see that the four possible outcomes will be BB,Bb,Bb, and bb. in order to find the ratio, think of: HOMOZYGOUS DOMINANT : HETEROZYGOUS : HOMOZYGOUS RECESSIVE. you check and see if you have (1st) any homozygous dominant (you have 1), then you check if you have any heterozygous (you have 2), lastly, you check if you have any homozygous recessive (you have 1). now. you put them in a ratio (in order) and you will get 1 : 2 : 1 !1

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9y ago

Genotypic ratio refers to the frequency of genetic information in a DNA. This genetic information is expressed using a ratio.

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15y ago

lol yea but if you have long term dont you get out at 2 30?

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8y ago

Genotype ratio is the number of different genotypes that are present after a cross. Phenotype is defined as genetic make up. A 50 chance

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Q: What does genotypic ratio mean?
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What a ratio?

A genotypic -ratio reflects the genetic configuration of an individual in the population. Several genotypes are possible in a phenotype and the ratio in which the genotypes segregate in a given phenotype is known as its genotypic ratio.


Why does the expected genotypic ratio often differ from the expected genotypic ratio resulting from a monohybrid cross?

becouse you touch yourself at night.


What is the genotypic ratio of the offspring from a cross of AAA x AAA?

The genotypic ratio of a cross of Aa and Aa is: one AA, one aa, and two Aa. Or 1:2:1


What is the fraction of genotypes that appear in offspring?

Genotypic Ratio. Source- My Biology Book


What is the genotypic ratio for two parents with the genotypes AAA and AAA?

AA : Aa in the ratio of 1:1


Why does the expected genotypic ratio often differ from the expected phenotypic ratio from monohybrid cross?

Because in heterozygotes, both alleles are transcribed and translated.


If both parents were Dd then what would the phenotypic ratio be?

Phenotypic ratio: 3 D, 1d [3 dominant, 1 recessive] Genotypic ratio: 1DD, 2Dd, 1dd


A homozygous dominant brown mouse is crossed with a heterozygous brown mouse (White is the recessive color)?

A pretty bow


What is the genotypic ratio for Nn x NN?

what is Nn x NN what is the percent


What is the genotypic ratio for a tetrahybrid cross?

1:1:1:1:1:1:1:1 ratio is the expected outcome of a heterozygous (BbGgCc) and a homozygous recessive (bbggcc) cross.


What is the expected genotypic ratio for a one factor cross of two hybrid organisms?

1 homozygous dominant: 2 heterozygous: 1 homozygous recessive


What is the phenotypic ratio of the?

Asuming that the F1 generation is heterozygous for a single trait and that the F2 cross is of 2 F1 offspring. Ex. Aa X Aa the phenotypic ratio is 3:1 dominant to recessive. The genotypic ratio is 1:2:1 AA:Aa:aa.