New traits in a population arise in response to need. (can NEED cause new alleles in a poulation?) True/False?

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2006-10-17 10:44:51 · 3 answers · asked by tigerfan 1 in Science & Mathematics ➔ Biology

False...new alleles can only come into a population by two methods, immigration or mutation.

2006-10-17 10:46:54 · answer #1 · answered by Shaun 4 · 0⤊ 0⤋

False (and I'm a neo-Lamarckian!).
New alleles are formed by mutation or certain chromosomal events.

2006-10-17 18:04:53 · answer #2 · answered by Anonymous · 0⤊ 0⤋

Edit: I misread the question. No. Need cannot.

2006-10-17 18:29:15 · answer #3 · answered by Anonymous · 0⤊ 0⤋