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A recessive phenotype is expressed in an offspring that has a homozygous recessive genotype for that trait.

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Gennaro Schmeler

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2y ago
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13y ago

A recessive allele is expressed if in the genotype there are two recessive genes. If there is a dominant gene it will mask the recessive.

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13y ago

The recessive trait shows when the offspring has two recessive alleles and no dominant allele (aa instead of AA or Aa).

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Q: When is a recessive allel expressed in offspring?
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Related questions

What makes a dominant allel different from?

A dominant alle masks the expression of the recessive trait in a heterozygous genotype, a recessive allele is the phenotpye expressed is the recessive trait.


What is a gene pair that consists of a dominate allel and a recessive allel?

That is called heterozygous or it is called a hybrid.


For a recessive trait to be expressed in a generation of offspring an individual must be a?

Homozygous


How are traits categorized for the offspring?

As traits are dispensed to the offspring they can be either dominant or recessive. A recessive trait is only expressed when two identical alleles exist.


When an allel is described by a lower-case letter it is a?

recessive


What types of alleles are expressed only if 2 identical copies exist on the homologs of the offspring?

Two copies of the recessive allele are the only way a recessive trait is expressed phenotypically.


What is an individal that has one recessive and dominant allel for pure bread?

Heterozygote.


What is it called when replication is messed up?

Mutation occurs, if a mutation is recessive it is not expressed in the phenotype, if however it is dominant when passed on in the offspring it is expressed in the phenotype.


What is a trait that needs two factors in order to be expressed?

Actually, it is the recessive.................................................................UR WELCOME! :)


What type of alleles are expressed only if two identical copies exist on the homolgs of the offspring?

Recessive because...


Which is expressed a dominant or recessive allele and which is passed on to the offspring?

The dominant allele will always show over the recessive, and both can be passed onto the offspring. To find out exactly which genotypes the children can have you need to make a punnet square!


What is RY506?

506 is allel variant of ry gene in Drosophila melnaogaster (The common fruitfly). The normal ry allel is recessive and prodiuces brown-orange produces