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 a group of appr83* qa c :ycyvmxv(iy9sn( *bkonivnf0*);jh. p1(uw;47hzcr vt mpef ximately 18 finches which share a common ancestor and are found on the Galapagos islands. Four of thm*hn p ) iuz(rvf4vh1tj 7cew0;nf ;p.ese 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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