Answer:
B. He has no E alleles.
Explanation:
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.
By the heat of the enegry
Oncovirus is the virus that is studied
Explanation:
Oncovirus are the tumour causing viruses, which has been a dominant in causing leukaemia and also solid tumours in lower species. Oncovirus grows clumps of cells in the upper layer of the original cell. Transformation of cells as well as the tumour formation in experimental cells are induced by the oncoviruses. viruses remain unique form one another because of their nucleic acid, morphology, mode of replication, host range and type of antigens induced in the tumour or induced cell.
Answer:
If a neurotransmitter attaches to a ligand-gated channel and creates a potential that causes the inside of the excitable cell membrane to become less negative, and this potential travels only a short distance before dying out, it is considered to be a <u>Graded or local potential</u>
Explanation:
<em>Graded potentials, also known as local or generator, are generated by an excitatory neurotranmitter, usually a ligan gated channel</em>, they occur at a localized place on the cell and their potentials are smaller (from 1-50mV) and its magnitude depends on the strength of the stimulus.
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