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Recessive alleles are only expressed in the phenotype if the organism is homozygous for the recessive allele (assuming diploidy). If the trait is sex-linked, then it will always show up in males if passed.

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

Recessive Trait


Compare and contrast dominant and recessive?

In genetics, each organism will typically have 2 alleles for each trait. For a trait such as hair color, you might have an allele for red hair from your dad and an allele for brown hair from your mom. The trait for brown hair happens to be dominant to the trait for red hair so you would show the allele for brown hair. (In other words, you would have brown hair.)


What happens when a dominant and recessive allele are both present?

The resulting offspring will have the dominant trait. It depends on if the dominant is hetero or homo...if it was homozygous then your offspring will have a hetozygous trait showing the dominant trait (to clear this up if you are confused lets say we are talking about brown eyes(BB-dominant) vs blue eyes(bb-recessive)--a homozygous would give you a brown eyed child with Bb and but if the person is heterozygous Bb and gets with a recessive you have a chance of getting Bb or bb giving you a possibility of a brown or blue eyed child)...wow i just made that way more confusing than it had to be


Is unibrow dominant or recessive?

its neither. its a learned skill. i can do it, and i learned to by holding one eyebrow up, with my finger, and learning to adapt from that. you use muscle in your face when you do it. if you want to learn, wrinkle your forehead that will help you.


Is adrenoleukodystrophy dominant or recessive?

This disease results from a mutation on the x-chromosome. It's recessive considering that a dominant will only cover up things that have occur, for example the damage that has occured, with something else. A recessive will continue to give latent traits. The allele in Adrenoleukodystrophy can only be caused by heredity mutation thus making it recessive.

Related Questions

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

Recessive Trait


A recessive trait is one that?

doesn't show up


What is the genotype any time a recessive trait shows up?

The genotype for a recessive trait to show up is typically homozygous recessive (aa), meaning both alleles are the same and both are recessive.


What did Gregor Mendel call the trait that did not show up in the offspring?

recessive


Why are two recessive alleles needed for a recesssive trait to be shown?

bcoz in case of one dominant and one recessive, dominant allele will express its characters and suppresses the recessive ones. so for the expression of recessive characters both allele should be recessive.


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.


How Dominant allele different from recessive allele?

You need two recessive alleles to get their trait, but only one dominant allele to get that trait. A dominant allele basically overrides a recessive one if they are together, but the recessive gene can show up in offspring.


Recessive allele different from dominate allele?

You need two recessive alleles to get their trait, but only one dominant allele to get that trait. A dominant allele basically overrides a recessive one if they are together, but the recessive gene can show up in offspring.


How is recessive alleles different from dominant alleles?

You need two recessive alleles to get their trait, but only one dominant allele to get that trait. A dominant allele basically overrides a recessive one if they are together, but the recessive gene can show up in offspring.


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

An individual must have 2 recessive alleles in order for a trait to show up. One must only have 1 dominant allele in order for a trait to occur.


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

A dominate trait will most likely take over the recessive.


What allele whose trait only shows up when no dominant allele is present?

Such a trait is called a recessive trait.