The orca, or killer whale, for example, is actually the largest member of the dolphin family. Dolphins are by far more prevalent than porpoises. Most scientists agree that there are 32 dolphin species (plus five closely related species of river dolphin) and only six porpoise species.
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Answer:
the gene is the single unit of the heredity that occupies a specific location on a chromosome
Explanation:
also non as genetic
