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nataly862011 [7]
3 years ago
10

At the boundary of every cell, the __________ functions as a selective barrier that allows sufficient passage of oxygen, nutrien

ts, and wastes to service the entire volume of the cell.
Biology
1 answer:
Vinil7 [7]3 years ago
6 0
The cell membrane functions as a selective barrier. We call these kind of membranes as differentially permeable or semi permeable membrane. It can decide what substances can pass in and out. Therefore it can surround the cytoplasm (which is the inside of a cell) to separate the cell's content from the surroundings.

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How does artificial selection provide evidence for evolution by natural selection
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Answer:

Natural selection is one of the mechanisms by which an organism evolve. In the natural selection when the trait of an organism allows the organism to grow and reproduce in an environment and nature selects it, it is then passed on to the generations and become permanent.

Artificial selection is also one of the mechanism of evolution in which instead of nature, the selection is made by humans like the breeding experiments on dogs and plant crops.

The artificial selection and natural selection are interlinked as in the artificial selection the trait selected by the humans were also selected by nature like the case of crops, the crossing between desired plants produced results which were useful to the humans but grew and reproduced only when the environment selected it to grow and reproduce.

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A, pleiotropy.

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Epistasis - when two genes contribute to the phenotype, but one gene completely masks another gene. An example would be labrador fur colors.

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Hope this helps!

4 0
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