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Akimi4 [234]
2 years ago
7

The Helper T-Lymphocyte expresses ______________ and ______________ on its surface. Select an answer and submit. For keyboard na

vigation, use the up/down arrow keys to select an answer. a CD-4; T-cell receptor b CD-8; T-cell receptor c Class II MHC; CD-4 d Class II MHC; CD-8 e Class II MHC; T cell receptorThe Helper T-Lymphocyte expresses ______________ and ______________ on its surface. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a CD-4; T-cell receptor b CD-8; T-cell receptor c Class II MHC; CD-4 d Class II MHC; CD-8 e Class II MHC; T cell receptor
Biology
1 answer:
ehidna [41]2 years ago
7 0

Answer:

Jbih if

Explanation:

.

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B. He has no E alleles.

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In order for the boy to have an attached earlobes phenotype, he must have no E alleles, because the E is dominant. So his genotype must be ee. If he has even just a single E allele (like Ee) he will have detached earlobes, because the dominant trait will mask the expression of the recessive trait.

Why not A or D: Heterozygous Ee (one of each allele) would result in detached earlobes.

Why not C: If he has no recessive alleles, EE, he would have detached earlobes.

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How does the process of dissolving occur​
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Why do scientist use the light year instead of astronomical units to measure the distance between stars ?
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