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Ivenika [448]
3 years ago
9

Use an example from nature to explain how natural selection causes populations to change as their environment change include the

following terms variation trait genes
Biology
1 answer:
ivanzaharov [21]3 years ago
5 0

Answer:

<u><em>Galapagos finches</em></u><u> have various beak sizes that make foraging for food more successful.</u>

Explanation:

Organisms evolve over time due to changes in their genome. These are pontaneous, and occur in DNA at random. These changes are called mutations and form alleles or different forms of a gene.

Over time within a population, the number alleles increase the variation of the population. These variants may confer specific traits within an individual, that may confer a biological advantage.

Thus, the trait may make the organisms more capable of obtaining food, shelter a mate etc. or ensure survival, i.e. they are able to pass on their genes to the next generation.

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marusya05 [52]
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4 0
3 years ago
According to the all-or-nothing principle, Select one: a. the amount of time a neuron must "rest" in between firing episodes is
Brilliant_brown [7]

Answer:

<em>The correct option is d) once the electrical impulse reaches a certain level of intensity (its threshold), it fires and moves all the way down the axon without losing any intensity.</em>

Explanation:

In the field of biology, the all-or-nothing law can be described as a principle which focuses on the strength with which a nerve or muscle fibre responds to a particular stimulus, this strength being independent of the strength of the stimulus. The functioning of the impulse is just like the trigger of a gun. The more the force of a stimulus, the more will be the intensity of the nerve impulse.

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3 years ago
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8 0
3 years ago
During which phase of mitosis do the nuclear membrane, nucleolus, and nucleus dissolve? metaphase prophase anaphase telophase
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4 0
3 years ago
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Um whats the question you're asking?

5 0
3 years ago
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