Answer:
A
Explanation:
because active transport uses energy to move against a concentration gradient from an area of low concentration to that of of high concentration.
Answer:
For a woman with type O blood and a man with type B blood, whose mother was of type O blood, the possible offspring will consist of B and O children.
Explanation:
Blood type is an inherited trait and is determined by the presence or absence of antigens A and B on the surface of the erythrocyte:
- <u><em>Blood type A</em></u><em> contains the antigen A and its genotype can be A|A or A|O.
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- <u><em>Blood type B</em></u><em> contains the antigen B, whose genotype may be B|B or B|O.
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- <u><em>Blood type AB</em></u><em> contains both antigens and a single genotype expression A|B.
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- <u><em>Blood type O</em></u><em> lacks surface antigens, with a unique O|O genotype.
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In the above case, the woman has an O blood type, whose genotype is O|O. The male must be heterozygous, since his mother was of blood type O, so his genotype is B|O.
To know the possible descendants of this couple, the crossing of the wolf alleles must be done:
Alleles B O
O B|O O|O
O B|O O|O
From where the probabilities of the offspring are obtained:
- Individuals with blood type B and genotype B|O 50%
- Individuals with blood type O and genotype O|O 50%
Therefore, from this crossing only descendants of individuals with blood type B and O can be obtained.
I don't think so, but I'm not very sure.
:)
The answer to this is Option b
