Sexual conflict and sexual selection 0.0 / 5 ? PsychologyEvolutionUniversityNone Created by: JessToLetYouKnowCreated on: 01-06-16 20:51 What makes up a gamete? Sperm and egg 1 of 31 What do virtually all multi-cell organisms have a difference between? Male and female gamete 2 of 31 What are sperm? Small, unlimited and "cheap" to produce 3 of 31 What are eggs? Large, scarce and costly to produce 4 of 31 What is the meeting of two dissimilar gametes called e.g. egg and sperm? Anisogamous 5 of 31 What is female gestation? Carrying of offspring 6 of 31 What is low in males? Parental Effort (PE) 7 of 31 Why are males promiscuous? Want to maximise reproductive success 8 of 31 What is inequality based on? Inequality of mating system e.g. polygamy 9 of 31 What to males mainly invest in? Mating effort 10 of 31 What does this depend on? Quality of parental effort 11 of 31 When PE and ME are equal, what is the type of species? Monogamous 12 of 31 When PE and ME are not equal, what is the type of species? Polygamous 13 of 31 When would traits solely for mating success develop? When ME is unequal 14 of 31 What is INTRAsexual selection? Mate selection due to interactions in one sex 15 of 31 What does this often lead to? Male competition 16 of 31 Those.... equipped will pass on.... Best, genes 17 of 31 What does this lead to? Tusks, antlers etc. 18 of 31 What is this called? Dimorphism 19 of 31 What is an example of this? Red deer stags 20 of 31 What is an example of competition not stopping after sex? Damselfly can remove another's sperm with its penis 21 of 31 What is INTERsexual selection? Mate selection due to interactions between sexes 22 of 31 Females prefer males who can show evidence of what? Resources 23 of 31 What is an example of this? A female hanging fly will only mate if the male can provide food 24 of 31 Intersexual selection can therefore explain Courtship displays 25 of 31 What did Andersson et al find about widow birds? Females preferred males with longer tails 26 of 31 Who proposed the handicap hypothesis? Zahavi 27 of 31 What does it suggest? That it suggests strength by surviving with handicap of long tail 28 of 31 What can a long tail also suggest? Fewer parasites and therefore "good" genes 29 of 31 What did Fisher (1930) propose about what female birds prefer? They prefer birds with better flight, associate this with long tails 30 of 31 What then happens if long tails don't improve flight? A runaway process 31 of 31
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