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When one allele does not mask the other and both show AB blood type?
Wiki User
∙ 11y ago
This is an example of co-dominance in which both alleles are expressed equally.
Wiki User
∙ 11y ago
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How is a recessive alle different from a dominant allele?
its different because adominant allele is in charge
Does a dominant allele mask a ressessive allele?
In diploid organisms (those with two copies of each gene carried on separate chromosomes), one of the copies of a given gene may differ from the other copy of the same gene on the twin chromosome. In some cases one version of the gene (the dominant allele) has the effect of 'masking' the activity of the other (the recessive allele); that is, the presence of the dominant allele negates the effect of the recessive allele on the organism's phenotype. There are many mechanisms which can cause this phenomena, and it depends on the particular genes involved, but a simple model is one where the recessive allele is a biochemically inactive version of the dominant allele. In this case the dominant allele would mask the effect of the recessive allele by providing an active version of the gene. The dominant phenotype would be the one which shows the downstream effects of this activity, and the recessive phenotype one which shows the downstream effects of a lack of activity. The dominant allele is said to 'mask' the recessive allele because only one copy is required to result in an elimination of the recessive phenotype, whereas all copies of the gene must be the recessive allele to result in the recessive phenotype.
When the dominant allele does not completely mask the effect of the recessive allele in the heterozygote it is called polygenic dominance incomplete dominance dominance corecessive codominance?
Incomplete dominance.
What is the expressed when neither copy of an allele completely mask expression of the other but instead of blending of the alleles is seen?
it is neither dominance nor codominance so stop saying what yall think!
A condition in which both alleles are dominant and cannot mask each other they blend?
Co-dominance.
Dominate allele will mask any other allele that is considered what?
recessive
When the alleles of a gene pair are expressed differently but neither is dominant to the other?
Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed.
When one allele of a gene mask the presence of the allele what form is masked?
Dominant
What type of allele masks the expression of the recessive allele and is therefore expressed in the heterozygous?
A dominant allele will mask the prsence of a recssive allele
What is expressed when neither copy of an allele completely mask expressions of the other but instead a blending of alleles is seen?
When neither copy of an allele is completely expressed or completely masked, it is called Incomplete Dominance. When incomplete dominance is present, then the offspring will have a blend of both parental phenotypes but will always be a slight bit slower to one parent than the other.
How is a recessive alle different from a dominant allele?
its different because adominant allele is in charge
What is the name of the gene pair that consist of a dominant allele and recessive allele?
The name of the gene pair that consists of a dominant and recessive allele, i.e. (Xx) will be a heterozygous allele. In this situation, the characteristics of the dominant characteristic will mask that of the recessive allele. People have have a heterozygous genotype may be carriers for diseases that reside on the recessive allele.
When the dominant allele does not completely mask the effect of the recessive allele in the heterozygote it is called polygenic dominance incomplete dominance dominance corecessive codominance?
Incomplete dominance.
Does a dominant allele mask a ressessive allele?
In diploid organisms (those with two copies of each gene carried on separate chromosomes), one of the copies of a given gene may differ from the other copy of the same gene on the twin chromosome. In some cases one version of the gene (the dominant allele) has the effect of 'masking' the activity of the other (the recessive allele); that is, the presence of the dominant allele negates the effect of the recessive allele on the organism's phenotype. There are many mechanisms which can cause this phenomena, and it depends on the particular genes involved, but a simple model is one where the recessive allele is a biochemically inactive version of the dominant allele. In this case the dominant allele would mask the effect of the recessive allele by providing an active version of the gene. The dominant phenotype would be the one which shows the downstream effects of this activity, and the recessive phenotype one which shows the downstream effects of a lack of activity. The dominant allele is said to 'mask' the recessive allele because only one copy is required to result in an elimination of the recessive phenotype, whereas all copies of the gene must be the recessive allele to result in the recessive phenotype.
Is a situation in which a dominant allele completely masks a recessive allele for a gene.?
If you have 2 dominant alleles, the gene will be dominant, if you have 2 recessive alleles, the gene will be recessive. But if you have 1 recessive and 1 dominant, the Dominant allele will mask the recessive one.
Is it possible for a type O baby to be born to a type O mother and type AB father?
No, as the mother has two O alleles, one of which is passed on. O is a recessive allele. The father would have a 50-50 chance of giving the A or B allele, both of which are dominant. The A or B would mask the O allele and give either a type A or B baby.
In the pea plants the presence of an allele for purple flowers will mask presence of an allele for white flowers. What does that mean?
Gene responsible for purple color is dominant over white color.
