AP BIOLOGY

HEREDITY

INCOMPLETE DOMINANCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A condition in which both alleles for a gene are expressed so that both traits are visible is known as ____
A
Codominance
B
Incomplete dominance
Explanation: 

Detailed explanation-1: -Definition. Codominance, as it relates to genetics, refers to a type of inheritance in which two versions (alleles) of the same gene are expressed separately to yield different traits in an individual.

Detailed explanation-2: -In codominance, both alleles are completely expressed.

Detailed explanation-3: -Indeed, “codominance” is the specific term for a system in which an allele from each homozygote parent combines in the offspring, and the offspring simultaneously demonstrates both phenotypes. An example of codominance occurs in the human ABO blood group system.

Detailed explanation-4: -codominance, in genetics, phenomenon in which two alleles (different versions of the same gene) are expressed to an equal degree within an organism. As a result, traits associated with each allele are displayed simultaneously.

Detailed explanation-5: -A trait resulting from an allele that is independently and equally expressed along with the other. An example of codominant trait is blood type, i.e. a person of blood type AB has one allele for blood type A and another for blood type B.

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