According to the biological species concept, species are natural populations of organisms that have the potential to interbreed and that are <span>reproductively isolated from other such populations.
(D.)., NATURAL
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A strand of DNA is in the double helix structure.. you can think of it as two interconnected spiraling stairs
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I think metastasis is a secondary tumor in a different part of the body that arises from a cells from the primary tumor. Metastasis means the spread of cancer cells. Cancer cells may break away from a primary tumor and enter the bloodstream or lymphatic system and is then spread to other parts of the body.
False
I hope this helps you with your question
