Problemonly mammals have mammaries and mammary, Ask an Expert

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Problem:

Only mammals have mammaries and mammary glands.

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Question 1: What evolutionary factors determines the number of mammaries (nipples/teats/breasts) a species has?

Question 2: Is it always an even number?

Does anyone know how to go about this search to explain it.

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Biology, Academics

Category:- Biology
Reference No.:- M91163581

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