Selection makes many organisms go to extreme lengths for sex: peacocks (top left) maintain elaborate tails, elephant seals  (top right) fight over territories, fruit flies perform dances, and some species deliver persuasive gifts. After all, what  female Mormon cricket (bottom right) could resist the gift of a juicy sperm-packet? Going to even more extreme lengths,  the male red-back spider (bottom left) literally flings itself into the jaws of death in order to mate successful. Such  selection is often powerful enough to produce features that are harmful to the individual's survival. For example,  extravagant and colorful tail feathers or fins are likely to attract predators as well as interested members of the opposite  sex. Such a evolutionary process is termed as

<p>Selection makes many organisms go to extreme lengths for sex: peacocks (top left) maintain elaborate tails, elephant seals (top right) fight over territories, fruit flies perform dances, and some species deliver persuasive gifts. After all, what female Mormon cricket (bottom right) could resist the gift of a juicy sperm packet? Going to even more extreme lengths, the male red-back spider (bottom left) literally flings itself into the jaws of death in order to mate successfully. Such selection is often powerful enough to produce features that are harmful to the individual's survival. For example, extravagant and colorful tail feathers or fins are likely to attract predators as well as interested members of the opposite sex. Such an evolutionary process is termed as</p>

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M.Sc. Entrance

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