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CBSE Class 10 Answered

a man with blood group A ,black color hair is crossed with woman with blood group O , brown colour hair show the monohybrid cross
Asked by srestasingh7 | 26 Dec, 2021, 10:36: PM
Expert Answer
With respect to ABO blood groups, blood groups A and B are codominant while blood group O is recessive.
Man with blood group A - IAIA / IAIO
Woman with blood group O - IOIO
Every hair color contains some amount of the darker pigment eumelanin. Low levels of eumelanin result in lighter hair, and higher levels result in darker hair. The genes responsible for hair color are neither dominant nor recessive — it is a matter of which genes are turned on or turned off. So, hair colour does not influence the genotype of a person.
Cross between man with blood group A and woman with blood group O is as follows-
IAIA × IOIO will give an offspring with blood group A.
IAIO × IOIO will give an offspring with either blood group A or O.
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