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Ivahew [28]
2 years ago
14

What is natural selection?

Biology
1 answer:
ivann1987 [24]2 years ago
8 0

Answer:

Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

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Scientists use homologous structures to identify evolutionary relationships. Which is an example of homologous structures?
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Match the animals with their characteristics.
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Earthworm - have a coelom and a closed circulatory system.

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Starfish - has an endoskeleton made of calcium-rich plates.

Spider - exhibits the phenomenon of molting.

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Scallops or clams belong to Phylum Mollusca, the second largest animal phylum. They are coelomate, triploblastic, bilaterally symmetrical organisms having an open circulatory system. They have a calcareous shell covered body with a distinct head, muscular foot, visceral hump and a mantle (soft and spongy layer of skin) over the hump.

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