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VMariaS [17]
3 years ago
12

7. Why is it impossible for a parent with type AB blood to have a baby with type O blood?

Biology
2 answers:
finlep [7]3 years ago
5 0

Answer:

The reason why an AB parent usually does not have an O child has to do with how blood type normally works genetically. Remember, we have two copies of each of our genes – one from mom and one from dad. This is true of the blood type (or ABO) gene as well. The ABO gene comes in three varieties: A, B, and O.

Explanation:

Hope this helps! :)

maxonik [38]3 years ago
4 0

Answer: This is because a parent with type AB blood has both A and B antigens therefore, the child must inherit either A or B antigen from the parent.

Explanation: In ABO blood type, blood types are classified on the basis of the antigens present in the red blood cells. There are two types of antigens: A and B antigens.

A blood type is so named because it has A antigens, B blood type has B antigens, AB blood type has both A and B antigens while O blood type has no antigens.

Each of these blood types is controlled by two alleles, and children inherit one allele from each parent. If a parent has AB blood type, none of his offsprings will have O blood type because each offspring must inherit either antigen A or B from this parent.

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Answer:

Option (3)

Explanation:

Springs (hot springs) and geysers are formed when the water from the interior of the earth are ejected into the earth's surface. In simple words, these are formed in the region where the groundwater and the ground surface intersects with each other.

The water obtained from springs can be cold or hot. Those that produce hot water are termed as hot-spring. These hot springs and geysers indicates the occurrence of volcanic activity. This water becomes hot due to the interaction with the magma at certain depths below the ground surface.

The geysers are also a type of hot-springs which produces hot water.

Thus, the correct answer is an option (3).

5 0
3 years ago
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arsen [322]

Answer:

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Explanation:

The options attached to the question are given below:

A. The decline of several fish populations

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7 0
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AlladinOne [14]

Answer:

B.

Explanation:

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