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Neither of the parents will be affected. There may not be any one with he disease in either of the parents families (or there might be). Since each parent is a carrier and has a 50/50 chance of passing one copy of the gene to each child 1/4 of the children will not get the gene, 1/2 will be carriers (1 copy) and 1/4 wil be affected (2 copies).

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Q: How does a recessive trait show up in an organism's phenotype?
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A trait that requires one allele in order to in order to show up in the phenotype?

A dominant trait only needs one copy of the allele to be expressed in the phenotype.


What is a recessive allele?

Recessive allele is a trait that doesn't show in one's phenotype (observable trait) if there is a dominant allelle present. Only when you inherit a recessive allele from both parents (aa for example and not Aa) does the trait show in your phenotype.


What is the only way a recessive trait will be expressed?

Breed/use only organisms showing the recessive trait for starters. If one of the parents or progenitor lines show the dominant trait then don't use their offspring. If the offspring of one of the oranisims show the dominant trait then remove both the parent of this offspring and this offspring showing the dominant trait from your program.


If about 50 percent of the offspring have the dominant phenotype and 50 percent have the recessive phenotype what are the genotype of the parents?

If 50% of the offspring show the dominant phenotype and 50% show the recessive phenotype, it is likely that one parent is heterozygous (Aa) for the trait and the other parent is homozygous recessive (aa). This would result in a 1:1 ratio of offspring showing each phenotype.


What is the pthenotype for each genotype?

Homozygous dominant genotype (AA): The phenotype will show the dominant trait. Heterozygous genotype (Aa): The phenotype will also show the dominant trait due to the presence of at least one dominant allele. Homozygous recessive genotype (aa): The phenotype will exhibit the recessive trait.


What will be the phenotype of a heterzygous gerbil?

The phenotype of a heterozygous gerbil will depend on the specific trait being studied and the dominance relationship between the alleles. If the trait follows a dominant-recessive pattern, the dominant allele's phenotype will be expressed. If the trait shows co-dominance or incomplete dominance, the phenotype will be a combination or intermediate between the two alleles.


What is phenotype of Rr?

It is Dominant. R is the dominant and r is the recessive. The dominate trait shadows the recessive trait. It is Dominant. R is the dominant and r is the recessive. The dominate trait shadows the recessive trait. Is dominant. dominant can be RR or Rr. but when its recessive its rr.


What is a recessive traits?

An x-linked recessive trait is a trait located on a x gene that is not dominant. It typically will show up when there is only 1 x gene, in the instance of males. Color blindness is an example.


Why is it that a person with an allele for a particular trait may not have a phenotype that shows the trait?

a dominant allele will express its trait , as well as be carried by the person. the word carrier is commonly used for a person who bears an allele which does not express itself(i.e. a recessive gene).


How would a recessive trait show up in a cross between two individuals with a dominant phenotype?

In a cross between two individuals with a dominant phenotype but carrying a recessive trait, the recessive trait would not be visibly expressed in the offspring (since they don't inherit two copies of the recessive allele). However, they would be carriers of the recessive trait, meaning they could pass it on to future generations.


What is the phenotype of a purebred recessive?

The phenotype of a purebred recessive individual will exhibit the recessive trait because they have two copies of the recessive allele. This means that the individual will show the characteristic associated with the recessive allele rather than the dominant allele.


What is the phenotype of a flower in a pea plant that is homozygous recessive?

The phenotype of a pea flower in a plant that is homozygous recessive for a specific trait will show the recessive trait. This means that the flower will display the characteristic associated with that recessive allele.