EVOLUTION
EVOLUTION OF A POPULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sexual preference by female peacocks
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Genetic drift randomly killed off all brown peacocks
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Peacocks mated with parrots a long time ago
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There is no reason-it’s a horrible mutation with no advantage
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Detailed explanation-1: -However, peacocks use their feathers to attract peahens (female peacocks). The peacocks with the showier feathers are able to attract mates, so they are the ones that have offspring, and pass on the fancy-feather genes to the next generation.
Detailed explanation-2: -Marion Petrie, working with peacocks, found that peahens choose their mates by the size and shape of his tail. This makes sense in evolutionary terms–the largest tail would indicate a healthy bird and a better chance for healthy offspring.
Detailed explanation-3: -Different species have different courtship behaviors. One example is a peacock raising his tail feathers. The colorful peacock is trying to impress females of his species with his beautiful feathers. Another example of courtship behavior in birds is the blue-footed booby.