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Artyom0805 [142]
3 years ago
8

Chemical signal released by nerve cells is:

Biology
1 answer:
Crank3 years ago
3 0

Answer:

The correct answer will be option-B.

Explanation:

A neurotransmitter is a chemical messenger used by the nerve cells to transmit the signals from one neuron to another neuron and muscle cell at the synaptic cleft. The common neurotransmitter is acetylcholine, dopamine, serotonin and others.

The neurotransmitter can be excitatory that is causing the generation of the action potential in the neurons or inhibitory that is prevent the generation of neuron in neuron cell. This depends on the receptors to it binds.

The neurotransmitters can be degraded or can be taken back after the work is completed. thus, Option-B is the correct answer.

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The dominant allele is for black fur. The recessive allele is for white fur.
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Answer:

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Explanation:

Genotype may be defined as the genetic constitution of the organism whereas phenotype depends on the genotype for the physical expression of the trait.

Let the genotype of the dominant fur (black ) be D and the genotype of white fur (recessive)  is f. homozygous means the individual should have the same allele for the trait. A mouse with homozygous dominant has genotype FF . This mouse has black fur. A mouse homozygous for the recessive trait has the genotype f. This mouse has white fur.

Thus, the answer is FF , Black fur.

ff, white fur.

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