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The enormous antlers of aged male deer is an example of:
- a)Natural selection
- b)Diversifying selection
- c)Sexual selection
- d)group selection
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The enormous antlers of aged male deer is an example of:a)Natural sele...
Concept:
- The sexual selection idea proposes that animals with distinctive physical characteristics, such as dramatic colour, enhanced size, or eye-catching adornments, may have an easier time finding mates.
- According to natural selection, such increases in mate-finding chances balance the dangers connected with the animal's higher level of environmental visibility.
- English naturalist Charles Darwin first proposed this idea in The Descent of Man (1871).
Explanation:
- Mutual attraction between the sexes is an important factor in reproduction.
- The males and females of many animal species are similar in size and shape except for the sexual organs and secondary sexual characteristics such as the breasts of female mammals.
- There are, however, species in which the sexes exhibit striking dimorphism (or physical difference).
- Particularly in birds and mammals, the males are often larger and stronger, more brightly coloured, or endowed with conspicuous ornamentation.
- These traits, however, make animals more visible to predators—the long plumage of male peacocks (Pavo cristatus) and birds of paradise (Paradisaea) and the enormous antlers of aged male deer (Odocoileus) are cumbersome loads in the best of cases.
- Darwin knew that natural selection could not be expected to favour the evolution of disadvantageous traits, and he was able to offer a solution to this problem.
- He proposed that such traits arise by “sexual selection,” which “depends not on a struggle for existence in relation to other organic beings or to external conditions but on a struggle between the individuals of one sex, generally the males, for the possession of the other sex.
hence the correct answer is option 3
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The enormous antlers of aged male deer is an example of:a)Natural selectionb)Diversifying selectionc)Sexual selectiond)group selectionCorrect answer is option 'C'. Can you explain this answer?
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