Explain the distinct differences between a bacterium and an animal cell.

1 answer:

5 0

Bacteria cell has chromosomal and plasmid dna and is prokaryotic (without a nucleus). Animal cell is eukaryotic (with a nucleus).

Bacteria cell has cell wall and cell membrane, but animal cell only has cell membrane.

Bacteria cell has no mitochondria, animal cell does.

Bacteria cell has flagella, animal cell doesn’t.

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allopatric speciation.

Explanation:

When the population belonging to the same biological species becomes separated from each other due to some geographical factor such that no gene flow can occur between the two separated populations then the speciation that occurs on account of this is known as allopatric speciation.
The geographical isolation that separates the two groups can be the origin of a mountain, the formation of islands, volcanic eruption, etc. which prevents the two groups fro mating with each other and ultimately causes their lineage to speciate.
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Thus, in the given question it is given that polar bears and grizzly bears have been mated and hybrids have been produced and this points out to the fact that polar bears are result of allopatric speciation.

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