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9:3:3:1 was the ratio of Mendel's f2 generation for the two factor cross.
Melvin Sipes
Wiki User
∙ 14y agoIt depends on the genotypes of the parents... if the parents are XX & xx the 100% will be X... if the parents are Xx and Xx then the 75% will be X and 25% will be x... if the parents are Xx and XX then 100% will be X... if the parents are Xx and xx then 50% will be X and 50% will be x... if the parents are xx and xx the 100% will be x... and so on
Also, if the phenotypes of both parents are x then the children of all will have the phenotype x... by the same token if both the parents are X then both the children will both be X. However if either or both the parents are heterozygous then there is no way of telling by just the phenotypes...
Wiki User
∙ 13y ago3:1 was the ratio of plants expressing contrasting traits that Gregor Mendel calculated in his F2 generation of garden peas.
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∙ 14y ago3:1
Wiki User
∙ 13y ago3:1
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What is the expected phenotype ratio of seed color of the offspring of an F1 x F1 cross?
If the parents were AA and AA for example then the phenotype ratio will be 1 A (the dominant allele). The genotype will be 1Aa.
A trait in the f1 generation that is different from the parental phenotype is known as?
A trait in the f1 generation that is different than that of the parental phenotype is known as a hybrid. This occurs as a result of two distinctly different parents producing a phenotype that is uniform and new.
According to mendel what genes disappear in f1 pea plants?
No genes disappear in the F1 generation. Each of the F1 plants was heterozygous, having both a dominant and recessive alleles. The recessive phenotype disappears in the F1 generation because all members of that generation carry a dominant allele. In the F2 generation, the recessive phenotype will reappear.
A homozygous violet flowered pea plant is crossed with a homozygous with flowered pea plant. If the violet color is dominant (V), what is the genotype and phenotype of the F1 generation?
What is the genotype and phenotype of the F1 generation
According to Mendel what kind of genes disappear in F1 pea plants?
No genes disappear in the F1 generation. Each of the F1 plants was heterozygous, having both dominant and recessive alleles. The recessive phenotype disappears in the F1 generation because all members of that generation carry a dominant allele. In the F2 generation, the recessive phenotype will reappear.
What is the phenotype in the F1 generation that disappears in a one trait test cross?
The recessive trait phenotype disappears in a one-trait test cross in the F1 generation. This phenotype can reappear in the F2 generation.
In the mendels experiment why did traits show up in the f2 generation that were not present in the f1 generation?
All of the F1 generation are heterozygous, therefore 100% exhibit the dominant phenotype. The F2 generation has a ratio of 1 homozygous dominant: 2 heterozygous: 1 homozygous recessive. This results in a phenotypic ratio of 3 dominant: 1 recessive.
In Mendels experiment why did traits show up in F2 generation that were not present in the F1 generation?
All of the F1 generation are heterozygous, therefore 100% exhibit the dominant phenotype. The F2 generation has a ratio of 1 homozygous dominant: 2 heterozygous: 1 homozygous recessive. This results in a phenotypic ratio of 3 dominant: 1 recessive.
What is the expected phenotype ratio of seed color of the offspring of an F1 x F1 cross?
If the parents were AA and AA for example then the phenotype ratio will be 1 A (the dominant allele). The genotype will be 1Aa.
A trait in the f1 generation that is different from the parental phenotype is known as?
A trait in the f1 generation that is different than that of the parental phenotype is known as a hybrid. This occurs as a result of two distinctly different parents producing a phenotype that is uniform and new.
According to mendel what genes disappear in f1 pea plants?
No genes disappear in the F1 generation. Each of the F1 plants was heterozygous, having both a dominant and recessive alleles. The recessive phenotype disappears in the F1 generation because all members of that generation carry a dominant allele. In the F2 generation, the recessive phenotype will reappear.
A homozygous violet flowered pea plant is crossed with a homozygous with flowered pea plant. If the violet color is dominant (V), what is the genotype and phenotype of the F1 generation?
What is the genotype and phenotype of the F1 generation
According to Mendel what kind of genes disappear in F1 pea plants?
No genes disappear in the F1 generation. Each of the F1 plants was heterozygous, having both dominant and recessive alleles. The recessive phenotype disappears in the F1 generation because all members of that generation carry a dominant allele. In the F2 generation, the recessive phenotype will reappear.
What phenotypes are present in F1 generation?
The phenotypes present in the F1 generation depend on the phenotypes of the parental generation (and the environment). The F1 generation will display the dominant trait(s). For example, if T is tall and t is short, in the cross TT X tt the F1 generation will have the phenotype corresponding to the T allele (tall).
In incomplete dominance genotypes can be expected to appear in a ratio of?
The expected phenotype for a Mendal F1 monohybrid cross is 3:1. Looking at heterozygous parents (F1) who share the same dominant trait, e.g. Straight tail.Crossing two heterozygous parents from the F1 generation results in an F2 generation that produces a 75% chance for the appearance of the dominant phenotype, of which two-thirds are heterozygous, and a 25% chance for the appearance of the recessive phenotype, giving the ratio 3;1.Inheritance pattern of dominant and recessive phenotypes when each parent is homozygous for either the dominant or recessive trait. All members of the F1generation are heterozygous and share the same dominant phenotype, while the F2generation exhibits a 3:1 ratio of dominant to recessive phenotypes.
What was the first generation of offspring in Mendels experiment?
The first generation of offspring from a cross is called the F1 generation.
Contrast the offspring in the F1 generation to the offspring in the F2 generation What did the differences in the F1 and F2 offspring show Mendel?
They differed both in genotype and phenotype. Mendel's F1 generation were all heterozygous Tall. Where his F2 generation had genotype frequencies as follows: 1TT:2Tt:1tt and the phenotype frequency 3tall:1short This is assuming you are referring to his experiments using height as the factor. His other experiments had similar results just replace all the uppercase T's with the dominant allele and the lowercase t's with the recessive trait.
