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What type of allele masks the expression of the recessive allele and is therefore expressed in the heterozygous?
Wiki User
∙ 11y ago
A dominant allele will mask the prsence of a recssive allele
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoWhy doesnt someone actually answer this instead of leaving it blank.
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What happens to the recessive allele in a heterozygous offspring?
The recessive allele is present, but not shown in complete dominance. This is because the dominant allele is completely dominant over the recessive allele, therefore it is shown, while the recessive allele is hidden.
What was the ratio of dominant of recessive phenotypes in the F2 generation of Mendel's experiments?
The traits were recessive.
Why is it impossible for offspring to show the recessive trait if one parent is homoygous for the dominant trait?
Because the parent with the homozygous alleles for the dominant trait can only pass on that dominant allele to its offspring and the dominant allele, if present, is always expressed.
Is being able to roll your tongue a dominant or a recessive trait?
Being able to roll your tongue is dominant, not being able to is recessive. Therefore, if you can roll your tongue, you have either a homozygous dominant gene for being able to roll your tongue, or a heterozygous gene. If you cannot, then you have a homozygous recessive gene.
How do you represent alleles?
Alleles are represented as: Gg Where G is the dominant trait and g is the recessive trait Therefore, homozygous dominant would be: GG Homozygous recessive would be: gg and heterozygous would be Gg
What is the term for an allele that is not expressed in the phenotype of a heterozygous individual?
incomplete dominance source: PH Bio textbook
What happens to the recessive allele in a heterozygous offspring?
The recessive allele is present, but not shown in complete dominance. This is because the dominant allele is completely dominant over the recessive allele, therefore it is shown, while the recessive allele is hidden.
What is a gene which is stronger and therefore expressed or shown in the phenotype?
I think the answer your looking for is "the dominant". However depending on what the gene codas for occasionally if both a dominant and recessive are present a different expression will be observed compared to just dominant or just recessive.
What is a gene which is stronger and therefore expressed or shown in the phenotype called?
I think the answer your looking for is "the dominant". However depending on what the gene codas for occasionally if both a dominant and recessive are present a different expression will be observed compared to just dominant or just recessive.
What was the ratio of dominant of recessive phenotypes in the F2 generation of Mendel's experiments?
The traits were recessive.
Why is it impossible for offspring to show the recessive trait if one parent is homoygous for the dominant trait?
Because the parent with the homozygous alleles for the dominant trait can only pass on that dominant allele to its offspring and the dominant allele, if present, is always expressed.
What is the percentage of offspring that will exhibit the dominant trait from A crossing of A homozygous dominant and homozygous recessive individual?
The homozygous dominant individual can only pass on the dominant allele and the homozygous recessive individual can only pass on the recessive allele, therefore all offspring will be heterozygous and have the dominant phenotype.
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.
Is being able to roll your tongue a dominant or a recessive trait?
Being able to roll your tongue is dominant, not being able to is recessive. Therefore, if you can roll your tongue, you have either a homozygous dominant gene for being able to roll your tongue, or a heterozygous gene. If you cannot, then you have a homozygous recessive gene.
If both heterozygous parents are carriers of a recessive allele for phenylketonuria the probability that a given child of these parents will have PKU is?
Pp x Pp yields PP, Pp, Pp, pp. PP is the only genotype which will cause the phenotypic expression of the gene - symptoms of PKU. Therefore the probability is 1/4 or 25%
How do you represent alleles?
Alleles are represented as: Gg Where G is the dominant trait and g is the recessive trait Therefore, homozygous dominant would be: GG Homozygous recessive would be: gg and heterozygous would be Gg
