GENETICS AND EVOLUTION
INHERITANCE AND VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Environmental
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Genetic
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Both
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None of the above
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Detailed explanation-1: -This is because it is determined genetically such as, A and B blood groups are dominant over the blood group type O. So, if O is present along with A or B antigen gene then only A or B will be expressed respectively.
Detailed explanation-2: -Blood groups are hereditary. They have a Mendelian pattern, in other words, they are the product of a single gene. The ABO gene has three types of alleles: A, B, and O. The first two, A and B, are codominant, in other words, they dominate equally.
Detailed explanation-3: -Blood type corresponds to the type of antigens present on your blood cells-for example, if you have type A blood, you have the A antigen on your cells. Environmental factors will not change your blood type because it is a genetic trait.
Detailed explanation-4: -Human blood group is an example of discontinuous variation.