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It depends on what you mean by "both are expressed".

In order for both alleles to be expressed, both alleles must be dominant alleles. If one allele is recessive, it will be masked.

If you are talking about alleles that are co-dominant, then both alleles would be expressed together. Ex: Red x white = red and white flower

If you are talking about incomplete dominance, then both alleles are seen as a blend of both in the offspring. Ex: red x white = pink flower

If you are talking about multiple alleles (like in human blood typing), then you can see 2 alleles expressed together. Ex: Type A x Type B can produce AB blood type.

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11y ago
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13y ago

In order for both traits to be expressed the two alleles of the heterozygote must be co-dominant. It is also dependent on whether the partner is homozygous or heterozygous for the same trait.

So to answer the question there is no real pattern for co-dominance unless the partner's genetics are known. Co-dominance is what makes cows black and white and makes flowers with pink petals (co-dominance of the white and red allele).

The variations based on each possible partner are too complicated to get into. A more specific question would be good.

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Anonymous

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3y ago

incomplete dominance

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Q: What is the name of inheritance pattern in which both alleles are expressed equally?
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What type of inheritance pattern are these rabbits likely displaying?

Types of dominance, multiple alleles, sex linked inheritance, polygenic inheritance and maternal inheritance.


Inheritance pattern of phenylketonuria and tay-sachs disease?

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Alleles that are neither dominant nor recessive produce an inheritance pattern known as .?

codominace


An inheritance pattern in which a gene has more than two alleles?

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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.


When more than two different alleles control a trait?

The presence of more than two alleles that control a trait is called multiple allele. An example of this is the group gene of ABO blood that has three alleles.


Pattern of inheritance in which both alleles contribute to the phenotype of the organism?

The pattern of inheritance in which both alleles contribute to the phenotype of the organism is codominance. For example white and red hair color in cattle. Black and white feather color in certain chickens.


The inheritance pattern that occurs equally in both sexes and skips generations is?

Had the same problem on my homework can`t figure it out.... do you go to WLHS?


What is codominance?

It's like incomplete dominance, but instead of one allele not being completely dominant for a trait, both alleles for that specific trait are dominant.A condition in which neither of two alleles of a gene is dominant nor recessive


A single gene trait that has two alleles and that shows a simple dominant recessive pattern will result in?

A 3:1 phenotypic ratio (Mendelian inheritance).


What type of inheritance pattern (are the A and B alleles to each other (Autosomal dominant-Regular dominant-recessive relationship, X linked, co-dominant, incomplete dominant)?

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What type of inheritance pattern is involved between a red haired animal and a white haired animal that produce an animal with both red and white hairs?

Alleles for both the red hairs and white hairs are used. This is a typical pattern of the codominance.