NEET BIOLOGY

GENETICS AND EVOLUTION

GENETIC BASIS OF INHERITANCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is codominance?
A
When both alleles can be observed in a phenotype
B
Having two of the same allele for a gene
C
Change in the nucleotide sequence of a gene
D
Process of making protein from RNA
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: -Codominance means that both phenotypes show simultaneously, so the heterozygote would be both red and white, which is a distinct third phenotype. These organisms would show spots or splotches of each color. This gives three total phenotypes: red, white, and red-white spotted.

Detailed explanation-3: -Codominance occurs when both alleles show dominance, as in the case of the AB blood type (IA IB) in humans.

Detailed explanation-4: -Codominance. Codominance refers to the dominance in which the two alleles or traits of the genotypes (of both homozygotes) are expressed together in offspring (phenotype).

Detailed explanation-5: -In complete dominance, only one allele in the genotype is seen in the phenotype. In codominance, both alleles in the genotype are seen in the phenotype. In incomplete dominance, a mixture of the alleles in the genotype is seen in the phenotype.

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