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18 Cards in this Set
- Front
- Back
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Intrasexual |
Competition between members of the same sex |
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Intersexual |
Members of one sex attempting to impress members of the opposite sex |
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Female choice |
Most frequent form of sexual selection where the female of the species gets to choose a mate and the male has to impress or seduce her |
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Runaway selection |
A term coined by Fisher, indicating certain features that have evolved to attract a mate, rather than its original purpose |
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Parental investment |
The effort a parent has to put in, in order for their offspring to survive |
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Handicap theory |
A theory (Zahavi) that states that certain male adornments to attract mates are hard to survive with in order to promote their strength |
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Sexy sons theory |
Male features not a direct indication of their genetic superiority due to female choice selection |
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Parasite theory |
Male adornments or features that show a lack of parasites |
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Honest signallers |
Male adornments honestly showing a male's lack of parasites rather than only looking as if they have no parasites |
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Perthenogenesis |
Also known as a 'virgin birth', asexual production in multi-cellular organisms |
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Fission |
The reproduction of unicellular organisms |
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Muller's ratchet |
The argument by Hermann Muller that sex wins out over asexual reproduction because it helps remove negative mutations |
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Raffle analogy |
Coined by George Williams, sexual reproduction gives an individual more chances or tickets to surviving offspring, increasing their fitness |
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Tangled bank theory |
Proposed by Bell, aimed to explain the diversity that sex offers through the interaction between biotic entities and their abiotic environment, giving them an edge in the competition of survival |
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Red Queen theory |
Proposed by Leigh Van Valen, the advantage of sex explained through the idea that parasites evolve faster than their hosts and to combat this, the hosts require to produce diverse offspring |
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Arms race |
The evolution of both a host and its parasites or viruses to combat each other's goals, where parasites and such evolve faster than their hosts due to larger numbers and shorter lifespans |
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Conspecifics |
Members of your own species |
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Morphological |
Physical |
