Three alleles control the expression of ABO blood groups in humans. This genetic phenomenon is known as:
Three alleles control the expression of ABO blood groups in humans. This genetic phenomenon is known as:
The correct option is D Multiple allelism
Multiple allelism relates to non-mendelian inheritances in which there are more than two alleles in a population that control a character. Human ABO blood group system is the best example of multiple allelism.
Lethal genes contain alleles that can cause the death of an individual who carries them. This is due to mutations in genes that are essential for growth and development. Lethal alleles are generally recessive but if they become dominant they can lead to the death of the individual.
In the case of polygenic traits, a phenotype is affected by more than one gene. In humans, height, skin colour etc are the examples of polygenic traits.
Codominance is a form of inheritance in which both alleles of a gene, when together in the heterozygous condition are fully expressed. As a result of this inheritance, offspring will show a combination of the parental phenotypes.
Multiple allelism relates to non-mendelian inheritances in which there are more than two alleles in a population that control a character. Human ABO blood group system is the best example of multiple allelism.
Lethal genes contain alleles that can cause the death of an individual who carries them. This is due to mutations in genes that are essential for growth and development. Lethal alleles are generally recessive but if they become dominant they can lead to the death of the individual.
In the case of polygenic traits, a phenotype is affected by more than one gene. In humans, height, skin colour etc are the examples of polygenic traits.
Codominance is a form of inheritance in which both alleles of a gene, when together in the heterozygous condition are fully expressed. As a result of this inheritance, offspring will show a combination of the parental phenotypes.
