Reproduction

For some time she had watched his movements, appearing coyly in his haunts. And now, had it salaried off? Doubtless, he was in live. His muscles were taut; he swooped by dint of the air more bid an eagle than a graylag gander. The only problem was, it was not for her that he then arrive in a flurry of quacks and wingbeats, or for her that he step on it off surprise attacks on his fellows. It was, rather, for another - for her preening rival across the Bavarian lake. Poor goose. Will she mate with the gander of her dreams? Or go away she trail him for years, laying infertile egg clutches as proof of her faithfulness? Either outcome is possible in an animal world marked daily by scenes of courtship, spurning and love triumphant. And take note: these are not the imaginings of some Disney screen-16 writer. Decades past Konrad Lorenz, a famed Austrian naturalist, made detailed studies of Greylags and subsequently showed no hesitation in using words like love, grief and even embarrassment to describe the behavior of these large, brotherly birds. At the same time he did not lay to rest that all romance - animal and human - is tied nearly to natural selection.

Natural selection brought on the evolution of males and females during prehistorical epochs when environmental change was making life difficult for single-sex species such(prenominal) as bacteria and algae. Generally, these reproduced by splitting into identical copies of themselves. untested generations were thus no better than old ones at last in an altered world. With the emergence of the sexes, however, youngsters acquired the qualities of two parents. This meant that they were different from some(prenominal) - different and perhaps better at coping with high-risk problems of survival. At the same time, nature had to furnish a invigorated set of instincts which would make parents out of such unreflective entities as mollusks and jellyfish.. The peacocks splendid feathers, the fireflys flash, the humpback whales reverberate bellow - all... If you want to get a full essay, disposition it on our website: Ordercustompaper.com

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