What is it called when two alleles are present?
An organism in which the two copies of the gene are identical — that is, have the same allele — is called homozygous for that gene. An organism which has two different alleles of the gene is called heterozygous.
When both alleles show up together it is called?
Codominance occurs when two heterozygous alleles are fully expressed. Neither allele can dominate, so they both show up, but they do not blend. The prefix co- means “together” so you can use that to remember that “both alleles show up together”.
When the two alleles present are the same?
For any gene, a person may have the same two alleles, known as homozygous or two different ones, known as heterozygous.
What pleiotropy means?
genetics. : the phenomenon of a single gene influencing two or more distinct phenotypic traits : the quality or state of being pleiotropic In genetics, there’s a concept called pleiotropy, which posits that a single gene can influence multiple traits. [
What is meant by Codominance?
Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed. So if an individual inherits allele A from their mother and allele B from their father, they have blood type AB.
What is an example of pleiotropy?
One of the most widely cited examples of pleiotropy in humans is phenylketonuria (PKU). This disorder is caused by a deficiency of the enzyme phenylalanine hydroxylase, which is necessary to convert the essential amino acid phenylalanine to tyrosine.
When both alleles can be observed in a phenotype?
Codominance. Two alleles may be simultaneously expressed when both are present, rather than one fully determining the phenotype.
What is different between two alleles of the same gene?
If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous.
When alleles of same gene expresses partially it is know as?
Question : When both the alleles of a gene are equally expressive, is called
|Question||When both the alleles of a gene are equally expressive, is called|
|Chapter Name||Heredity And Common Genetic Disease|
|Subject||Biology (more Questions)|
|Type of Answer||Video, Text & Image|