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If by "all dominant phenotypes" you mean the parents are homozygous, then no.
AA x AA will never yield a gamete with AA
But if you're talking about heterozygous chromosomes
Aa x Aa, then yes
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoYes. An example of this is the color of someones eyes. they might be blue and green or blue and hazel or green and hazel and even each eye has half a color.
It's called co-dominance
Although, Co-dominance is not found in humans. A good example of co-dominance is in cows. You may have seen a red cow before right? Wrong. What you are actually seeing is a white cow and brown cow offspring. If you walked up close to the "red cow" you would be able to see that it is a mixture of brown hairs and white hairs. The mixture then appears red to the human eye when seen from afar.
Wiki User
∙ 12y agoYes! Only if the parents are both heterozygous for that particular trait. So say the child had a bb genotype. The parents would have to have a Bb genotype in order to produce a child with a bb genotype.
Wiki User
∙ 11y agoIf one parent has dominant and recessive, and the other parent has either dominant and recessive OR recessive and recessive, then it is possible that two recessive traits are donated to the child and therefore they will have the recessive gene.
For example, dad has brown eyes (dominant), and he carries the dominant brown eyed gene as well as the recessive blue eyed gene. Mom also has brown eyes and also carries one dominant brown gene and one recessive blue gene. When their child is created, here are the possible combinations for eye colour:
dominant (dad) and dominant (mom) = brown eyes (child)
dominant (dad) and recessive (mom) = brown eyes
dominant (mom) and recessive (dad) = brown eyes
recessive (dad) and recessive (mom) = BLUE EYES
So it is possible that both brown-eyed parents donate the recessive blue gene and produce a blue-eyed child.
But if either of them donate the dominant gene, then the dominant brown gene will mask the blue-eyed recessive gene.
Wiki User
∙ 13y agoYes, if the recessive trait was hetreozygous.
Wiki User
∙ 15y agoTwo parents each with a recessive trait have a 1/4 chance to have a child with the trait.
Wiki User
∙ 14y agoNo, because recessive phenotypes' genotype is always rr. Therefore, it is impossible for a dominant trait to show.
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Comapre and contrast dominant and recessive traits?
Dominant traits only require one allele to be present in order for the trait to be expressed, while recessive traits must have both alleles present in order for the trait to be expressed.
What gene is always expressed?
Dominant genes will always be expressed however recessive genes would need to be inherited from both parents
What is a genotype composed of?
Genotype is the genetic make up of an organism both expressed (phenotype) and unexpressed.Example: AaeeDndn is the genotype which includes unexpressed (recessive) alleles a and dn.Expressed dominant traits A and Dn as well as expressed recessive traits (ee). Note that expressed recessive traits have to be homozygous.
Is heterozygeous dominant or reccesive?
Heterozygous means that it carries both dominant and recessive traits (as opposed to homozygous which carries only one) - the dominant trait is the one which is expressed (phenotype). A heterozygous trait can be expressed as Rr - "R" the dominant trait and "r" the recessive trait.
What is a trait that needs two factors in order to be expressed?
Actually, it is the recessive.................................................................UR WELCOME! :)
Comapre and contrast dominant and recessive traits?
Dominant traits only require one allele to be present in order for the trait to be expressed, while recessive traits must have both alleles present in order for the trait to be expressed.
What gene is always expressed?
Dominant genes will always be expressed however recessive genes would need to be inherited from both parents
Which form of gene pair is expressed when both dominant and recessive are present?
If the gene is governed by a dominant and recessive allele, then if the dominant allele is present, the dominant trait will be expressed. If both alleles are recessive, then the recessive trait will be expressed.
What is a genotype composed of?
Genotype is the genetic make up of an organism both expressed (phenotype) and unexpressed.Example: AaeeDndn is the genotype which includes unexpressed (recessive) alleles a and dn.Expressed dominant traits A and Dn as well as expressed recessive traits (ee). Note that expressed recessive traits have to be homozygous.
What is meant by dominance and recessiveness?
First of all alleles code for different traits all across an organism. Simply looking at it, a dominant allele is a trait that essentially "dominates" or is expressed over a recessive allele. In theory every organism (that is not asexual) receives one allele from its father and one allele from its mother. If both of these alleles are dominant (homozygous dominant) than the dominant trait is expressed, if one is dominant and one is recessive (heterozygous) than still the dominant trait is expressed. However, if the alleles for both traits are recessive (homozygous recessive) than the recessive trait will be expressed.
Is heterozygeous dominant or reccesive?
Heterozygous means that it carries both dominant and recessive traits (as opposed to homozygous which carries only one) - the dominant trait is the one which is expressed (phenotype). A heterozygous trait can be expressed as Rr - "R" the dominant trait and "r" the recessive trait.
What is a trait that needs two factors in order to be expressed?
Actually, it is the recessive.................................................................UR WELCOME! :)
When neither allele is dominant (they are both expressed)?
Both of the alleles must be recessive. The trait expressed is a recessive trait.
What is the difference between homzyguos and heterozyous?
Homozygous recessive: is when the genes are both recessive Homozygous dominant: is when the genes are both dominant (traits show) Heterozygous dominant: is when one gene is dominant and one is recessive (traits show) Heterozygous recessive: is the same as heterozygous dominant but the dominant genes are inactive
When neither allele is dominant what are they expressed as?
Both of the alleles must be recessive. The trait expressed is a recessive trait.
What is the term that describes when both alleles show up equally?
homozygous dominant or recessive depending on what gene it is
Can a recessive gene be hidden from a dominant?
The dominant gene will always "cover up" the recessive gene, although there are instances of codominance, in which both phenotypes will be displayed, because one gene is not completely dominant over the other. There is also what is called 'incomplete dominance', when the actual phenotype is somewhere between the two.
