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Why are recessive alleles not always expressed as the phenotype?
recessive alleles get masked to show the difference in a dominant gene and a recessive gene. the dominate genes masks the recessive genes to show that the dominate gene is more dominate or more likely to be the outcome than the reccessive gene but the masked gene is not always recessive.
How do you read a Punnet Square?
Reading a punnet square is much like reading a grid map. Start with one finger on the father allele and one on the mother allele and find where they meet in the middle, the combination of both the father allele and the mother allele will give you the genotype. Repeat for all four middle squares. In all punnet squares, the dominate gene is the capital letter (e.g R) and the recessive gene is the normal letter (e.g r). When two dominate alleles show (RR) the phenotype will show the dominate gene. When one dominate and one recessive allele show the dominate gene will still show (Rr), in females they call it them a carrier female because they carry the recessive allele as well. When two recessive alleles show (rr) the recessive feature will show in the phenotype.
How do dominate traits over power the recessive?
dominates it (you get the dominant form)
A gene is recessive when?
Most genes have two copies of each gene with dominant gene "trumping" the recessive one. The gene is recessive because it is said not to do much of anything unless paired with another recessive gene, but if paired with a dominant gene, the dominant gene wins.
Which trait will be expressed if both dominant gene and recessive gene are in the gene pair?
The current school of thought is that a dominant gene needs only a single copy to express its coding where as a recessive gene needs two copies of itself. The different forms of a gene are called alleles. Each parent contributes an allele. For example brown eyes and blue eyes. A blue eyed person would have two blue eye genes. A brown eyed person would have at least one brown eyed gene and either a blue or brown eyed companion. Hence two blue eyed people should only have blue eyed children. Two brown eyed people could possibly have either blue or brown eyed children. Science is discovering that genes interact in very complex ways. There is dominance, recessive, codominance, corecessive, and interactions between multiple genes to produce an outcome. While the reporting of DNA research and discoveries may make it seem we have an understanding of how genes work the reality is that the study of DNA and its functions is still in its infancy.
Are alleles dominant or recessive?
Alleles are neither entirely recessive nor entirely dominate. An allele is any one of a number of alternative forms of the same gene on a chromosome.For example: say a flower only blooms either red or white flowers. There is a different allele for each color-- a red allele and a white allele. Now, one color may be dominate over the other recessive gene. For example, if the red color was dominate and the white color was recessive, then those certain alleles would be dominate and recessive, respectively. But alleles in general cannot be either recessive or dominate. It depends on the gene and it depends on the trait.
Why are recessive alleles not always expressed as the phenotype?
recessive alleles get masked to show the difference in a dominant gene and a recessive gene. the dominate genes masks the recessive genes to show that the dominate gene is more dominate or more likely to be the outcome than the reccessive gene but the masked gene is not always recessive.
Why are traits controlled by recessive alleles on the X chromosome are more common in males than in females?
Males only have one X chromosome, so even if the gene on that chromosome is recessive there is no other gene that could dominate it. Females have two X chromosomes, so if the gene on that chromosome is recessive there is still a chance that the gene on the other chromosome could be dominate and override it.
What is a reccesive gene?
an allele that is not expressed when paired with a dominant allele. Only expressed when paired with another recessive allele.
What are two forms that a gene or allele may take?
A gene or allele may take a dominant form, or a recessive form. If the allele is recessive, the characteristic which is coded for will be exhibited only if both the gene from the male and the gene from the female is recessive. Only one copy of a dominant allele is required to cause expression of the dominant characteristic
How do you find possible phenotypes of offspring?
Mendel Diagrams. If the offspring gets a dominate gene from both parents, the offspring will exhibit traits from the dominate gene. If the offspring gets a dominate gene from one parent and a recessive gene from another, the offspring will exhibit traits from the dominate gene. If the offspring get a recessive gene from both parents, the offspring will exhibit traits from the recessive gene.
How do you read a Punnet Square?
Reading a punnet square is much like reading a grid map. Start with one finger on the father allele and one on the mother allele and find where they meet in the middle, the combination of both the father allele and the mother allele will give you the genotype. Repeat for all four middle squares. In all punnet squares, the dominate gene is the capital letter (e.g R) and the recessive gene is the normal letter (e.g r). When two dominate alleles show (RR) the phenotype will show the dominate gene. When one dominate and one recessive allele show the dominate gene will still show (Rr), in females they call it them a carrier female because they carry the recessive allele as well. When two recessive alleles show (rr) the recessive feature will show in the phenotype.
Recessive allele different from dominate allele?
You need two recessive alleles to get their trait, but only one dominant allele to get that trait. A dominant allele basically overrides a recessive one if they are together, but the recessive gene can show up in offspring.
How do dominate traits over power the recessive?
dominates it (you get the dominant form)
What is heterozygous dominate genotype?
It's actually just heterozygous. That means that one allele is dominant and one allele is recessive. The result is a dominant trait, but the recessive gene may come back in future generations.
Genes that are only seen when paired with a recessive gene?
if u have a recessive gene with a recessive gene then u can see the recessive gene but if you have a dominant gene with a recessive gene you can only see the dominant gene hope that helps:)
A gene is recessive when?
Most genes have two copies of each gene with dominant gene "trumping" the recessive one. The gene is recessive because it is said not to do much of anything unless paired with another recessive gene, but if paired with a dominant gene, the dominant gene wins.
