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Citrus2011 [14]
3 years ago
8

What is the role of the nervous system in heartbeat regulation?

Biology
1 answer:
Reptile [31]3 years ago
8 0
HEART RATE IS CONTROLLED BY THE TWO BRANCHES OF THE AUTONOMIC (INVOLUNTARY) NERVOUS SYSTEM.THE SYMPATHETIC NERVOUS SYSTEM (SNS) AND THE PARASYMPATHETIC NERVOUS SYSTEM (PNS).THE SYMPATHETIC NERVOUS SYSTEM RELEASES THE HORMONES (CATECHOLAMINES-EPINEPHRINE AND NOREPINEPHRINE) TO ACCELERATE THE HEART RATE
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Although selection operates against deleterious alleles in populations, they are rarely lost from these populations. For example
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Answer:

Deleterious alleles appear sporadically in a population

Explanation:

A population with a deleterious allele will have no or few individuals that have the ability to pass along these traits. These alleles appear less in a population because of selective pressure but they are not always absent. The alleles appear less often but are are not always passed on and the others that are genetically fit are able to pass along their genes. The reason the population equilibrium is not zero is because these alleles do appear but they are not necessarily passed along. These individuals may not be able to reproduce or reach the age of reproduction.

Deleterious alleles appear more often, making individuals less fit genetically, i.e. they pass fewer copies of their genes to future generations. Put another way, natural selection purges the deleterious alleles.

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The correct answer is T
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Answer:

The given blank can be filled with minimum viable population.

Explanation:

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The minimum viable population refers to the smallest probable size at which the population can prevail without encountering extinction due to demographic or natural disasters, genetic, or environmental stochasticity. Generally, MVP is utilized to signify towards a wild population, however, it can also be utilized for ex-situ conservation.  

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