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Andru [333]
3 years ago
12

What are the mechanisms of natural selection, and how do they lead to changes in

Biology
1 answer:
Nata [24]3 years ago
5 0

Darwin's proposed mechanism for evolution is natural selection. Natural selection allows species to respond to their surroundings through time, or to become progressively excellently-suited. Natural selection is environmentally based and involves established heritable variation within a population.

They lead to changes in  species over time:

  • Darwin suggested species will evolve over time, new species originate from pre-existing species, and all species share a common ancestor with each other.
  • In this framework each organism has its own special set of heritable i.e genetic variations from the common ancestor that have slowly developed over very longer periods of time.
  • Parroted branching activities that isolate new species from a common ancestor create a multi-level tree that connects all living organisms.
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alleles

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Do all cells within a single organism have the same DNA?
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Does Every Cell in the Human Body Contain the Same DNA? With few exceptions, all cells in a person's body have the same DNA and genes. As cells divide and grow different genes are expressed, resulting in different cell types.

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What are regenerative cells ???​
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Regenerative cells are specific types of cells that can be activated in order to restore organs and tissues back to a pre-existing normal state.

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In conclusion, regenerative cells are specific types of cells that can be activated in order to restore organs and tissues back to a pre-existing normal state.

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3 0
3 years ago
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Why do liquids freezes and melts at the same time?
Galina-37 [17]
So to sum up, when matter is transitioning from solid to liquid (melting) or liquid to solid (freezing<span>), its </span>temperature<span> is fixed at the </span>melting/freezing<span> point, which is the </span><span>same temperature</span>
8 0
3 years ago
Lập bảng so sánh adn và arn
Sergeeva-Olga [200]

Answer:

like DNA, RNA is made up of nucleotides.There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.

Explanation:

hope this helps :)

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