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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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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.


A trait that requires one allele in order to in order to show up in the phenotype?

Recessive traits require two recessive alleles.


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 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).


Is recessive the process in which DNA changes to form new alleles?

No, recessive traits refer to the inheritance pattern of the allele. In the simple case where a trait is either expressed or not, if it is a recessive trait it will only be the expressed phenotype when it is homozygous. Dominant allele phenotypes will show if the genotype is heterozygous.


What is the difference between a dominant trait and a recessive trait?

A dominate trait will most likely take over the recessive.


What does it mean when a trait is recessive?

The principle of excessiveness is defined as the explanation of why one trait will not show over another. If a trait is recessive it will not show when a dominant trait is present.


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

If both the individuals are heterozygous dominant then the probability of recessive (homozygous) phenotypic offspring would be 1:4


When a trait seems to disappear or doesnt show up often?

Recessive Trait


All individuals that show a recessive trait are?

recessive trait only appear when an individual is homozygous recessive, both alleles must code for the recessive trait


What the allele that is hidden?

i think the answer your lokking for is recessive Recessive is when you have a trait in your genome but it doesn't show in your physical appearance