本题目来源于试卷: Unity and Diversity A.8 Evolution and Speciation，类别为 IB生物学
[问答题]
1.Adaptive radiation resm-d v1vn s5yo y(37gjsults in a single ancestral specibs +cvwvur4* u;6vi(ves evolving into multiple, closely related new species which may live in close proximity to each other. v6u +vui; vs4cwrv( *bOutline 3 mechanisms by which closely related species living in close proximity may be reproductively isolated.
2.Outline the process by which two species may be formed from an ancestral population through the process of allopatric speciation.
3.Describe how sexual and asexual reproduction can lead to the formation of new species with different numbers of copies of each chromosome.
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