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A gene showing codominance has: [2015 RS]
- a)alleles tightly linked on the same chromosome
- b)alleles that are recessive to each other
- c)both alleles independently expressed in the heterozygote
- d)one allele dominant on the other
Correct answer is option 'C'. Can you explain this answer?
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A gene showing codominance has: [2015 RS]a)alleles tightly linke...
(c) In codominance both alleles are independently expressed in the heterozygote
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A gene showing codominance has: [2015 RS]a)alleles tightly linke...
Explanation:
In codominance, both alleles of a gene are independently expressed in the heterozygote. This means that both alleles are expressed equally and at the same time, resulting in a phenotype that shows both traits. For example, in the ABO blood group system, the A and B alleles are codominant, so individuals with the AB genotype have both A and B antigens on their red blood cells.
Other options:
a) Alleles tightly linked on the same chromosome: This is referring to the concept of linkage, where genes that are close together on a chromosome tend to be inherited together. This is not related to codominance.
b) Alleles that are recessive to each other: Codominance is the opposite of recessive, so this option is incorrect.
d) One allele dominant on the other: This is referring to incomplete dominance, where one allele is partially dominant over the other. This is not related to codominance.
In codominance, both alleles of a gene are independently expressed in the heterozygote. This means that both alleles are expressed equally and at the same time, resulting in a phenotype that shows both traits. For example, in the ABO blood group system, the A and B alleles are codominant, so individuals with the AB genotype have both A and B antigens on their red blood cells.
Other options:
a) Alleles tightly linked on the same chromosome: This is referring to the concept of linkage, where genes that are close together on a chromosome tend to be inherited together. This is not related to codominance.
b) Alleles that are recessive to each other: Codominance is the opposite of recessive, so this option is incorrect.
d) One allele dominant on the other: This is referring to incomplete dominance, where one allele is partially dominant over the other. This is not related to codominance.
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A gene showing codominance has: [2015 RS]a)alleles tightly linke...
As both the alleles are dominant they can express themselves independently in equal amount..
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A gene showing codominance has: [2015 RS]a)alleles tightly linked on the same chromosomeb)alleles that are recessive to each otherc)both alleles independently expressed in the heterozygoted)one allele dominant on the otherCorrect answer is option 'C'. Can you explain this answer?
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