What is the Phenotype?
2 answers:
The correct answer is A. Physical characteristic of a trait.
Explanation
The phenotype is a concept used in the area of genetics to refer to the visible physical characteristics of an organism as a result of the manifestation of the genetic information contained in its genotype and the conditions of the determined environment in which the organism lives.
On the other hand, there is the genotype, which is a concept referred to as the abstract set of genetic information contained in the genes of an organism.
According to the above, the correct answer is A.
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Answer:
<u> Neuromuscular Junction -</u> It is a chemical synapse formed by the contact between a motor neuron and a muscle fiber.
<u>Function- </u>As the motor neuron are <em>able to transmit the required signals</em> to the muscle fiber, which causes the muscle contraction.
Explanation:
<u>Steps in neuromuscular transmission:</u>
- nerve action potential.
- calcium entry into the presynaptic terminus.
- release of Ach quanta.
- diffusion of Ach across cleft.
- combination of Ach with post-synaptic receptors and Ach breakdown via esterase.
- opening of Na + /K + channels (cation channels).
- postsynaptic membrane depolarization (EPP).
- muscle action potential.
