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The F1 (first filial) generation is always 100% heterozygous.
This is because the F1 generation is defined as the offspring of pure-breeding (homozygous) parents carrying different alleles from each other, e.g. AA x aa. All the offspring must be Aa, in other words heterozygous.
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoA monohybrid cross is a cross between parents who are heterozygous at one locus. For example, consider a locus with two alleles, A and a. A monohybrid cross thus involves parents whose genotypes are both Aa,and is represented this way: Aa X AaThis is the parental generation. We know that 1/4 of the offspring of this cross will not be heterozygous, i.e., will have the aa genotype. Therefore, in a Mendelian monohybrid cross, only the parental generation is always completely heterozygous.
Wiki User
∙ 15y agoWell, the P-generation, which is the true breed generation or parent is the homozygous dominant and homozygous recessive. Thent he F1 was heterozygous, which resulted in a cross to make tall plants (dominant) and some short plants (recessive)
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What happens to alleles between the p generation and F2 generation?
In the P generation, one parent is homozygous dominant and the other parent is homozygous recessive. In the F1 generation, the product of a cross between the P generation, the offspring are all heterozygous. In the F2 generation, the product of a cross between the F1 generation, the expected result is 1/4 homozygous dominant, 1/2 heterozygous, and 1/4 homozygous recessive.
Which blood type is always heterozygous?
AB
What is the heterozygous for the A allele?
Heterozygous Aa Homozygous AA, aa
Will Heterozygous genes always display a dominant trait?
Yes.
Is a carrier homozygous or heterozygous?
No, because he or she cannot pass the gene on to his or her offspring (because he or she does not have a copy of the gene).
What happens to the alleles between the P generation and the F2 generation?
In the P generation, one parent is homozygous dominant and the other parent is homozygous recessive. In the F1 generation, the product of a cross between the P generation, the offspring are all heterozygous. In the F2 generation, the product of a cross between the F1 generation, the expected result is 1/4 homozygous dominant, 1/2 heterozygous, and 1/4 homozygous recessive.
What happens to alleles between the p generation and F2 generation?
In the P generation, one parent is homozygous dominant and the other parent is homozygous recessive. In the F1 generation, the product of a cross between the P generation, the offspring are all heterozygous. In the F2 generation, the product of a cross between the F1 generation, the expected result is 1/4 homozygous dominant, 1/2 heterozygous, and 1/4 homozygous recessive.
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.
In the F2 generation in Mendel's experiment's the ratio of dominant to recessive traits was?
3:1 homozygous dominant, heterozygous dominant, heterozygous dominant and homozygous recessive.
Which blood type is always heterozygous?
AB
How is a genetic test cross helpful?
it helps to know whether the F1 generation is in homozygous or in heterozygous condition
What percentage of genotypes would most likely be found in the f1 generation offspring?
If the parent generation consisted of a homozygous dominant parent and a homozygous recessive parent, then the F1 generation would be 100% heterozygous.
What is the heterozygous for the A allele?
Heterozygous Aa Homozygous AA, aa
Will Heterozygous genes always display a dominant trait?
Yes.
Why do the genes come back even though they skipped a generation?
Beacause they are dominant and heterozygous and they stay with you even though you may not have the genes
What was the ratio of tail to short plants in the f2 generation of Mendel's experiments?
100% heterozygous pea plants. Showing the dominant trait
