40. Which is NOT an actual study of natural selection? A) Rose and Charlesworth

Question

40. Which is NOT an actual study of natural selection?

A) Rose and Charlesworth demonstrated that Drosophila melanogaster flies would respond to selection for a wide variety of life-history characters.
B) In elderflower orchids, it was demonstrated that the rarer color morph (white vs. purple) had a distinct advantage in terms of attracting pollinators and setting seed.
C) In Galapagos finches, it was demonstrated that finches with deeper beaks survived a severe drought better than beaks with shallow or medium-sized beaks.
D) Kettlewell demonstrated that light and dark morphs of Biston bettularia differ in their susceptibility to predation by birds.
E) All of the above are actual.

Explanation / Answer

A) Rose and Charlesworth demonstrated that Drosophila melanogaster flies would respond to selection for a wide variety of life-history characters.

Natural selection is a natural process of selection of genotypes that would result in offspring with better reproductive capabilities. Natural selection is highly unpredictable and it act on pre-existing genetic variants.Natural selection always results in better survival of organism.

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