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If two persons with ‘AB’ blood group marry and have sufficiently large number of children these children could ve classified as ‘A’ blood gorup: ‘AB’ blood group: ‘B’ blood group in 1 : 2 : 1 ratio. Modern technique of protein eletrophoresis reveals presence of both ‘A’ and ‘B’ type proteins in ‘AB’ blood group individuals. This is an example of:
Options
(a) incomplete dominance
(b) Partial dominance
(c) Complete cominance
(d) Comdominance
Correct Answer:
Comdominance
Explanation:
ABO blood group system in human beings is an example of codominant, dominant recessive and multiple alletes. Blood groups are controlled by the gene I located on 9th chromosome that has 3 multiple alleles, out of which any two are found in a person. In codominance bothe gene express it self completely.
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Topics: Genetics
(204)
Subject: Biology
(4253)
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