Continuity and Change D.10 Natural Selection (id: 50bce88ab)

本题目来源于试卷: Continuity and Change D.10 Natural Selection，类别为 IB生物学

[问答题]
Darwin’s finches are a2(gg sfrz7,cu3d)gcy gro;nu9+kyir6,x, )q( q1np 6lj fn ghwdqup of approximately 18 finches which share a common ancestor and are found on th1fl6r,qqnpnx,9j6 ky+g d(q;)iw u nhe Galapagos islands. Four of these finches are shown below.


1.1.Explain the differences in beak shape and size shown in the four individuals A, B, C, D.

1.2.State two possible causes of genetic variation between finches found on the same island.

1.3.Discuss the hypothesis that the finches found on different islands are different species.

2.Species tend to produce more offspring than their environment can support. Explain how this contributes to natural selection.

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