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21 Cards in this Set

  • Front
  • Back

what is anisogamy

where males and females have different gametes (eggs vs sperm)

what are sexual dimorphism related to

optimal mating rates and amount of mate compeitition

what I sexual conflict

when males and females have different mating strategies they often conflict

describe sexual antagonistic coevolution

when to sexes evolve traits in response to the other sex

give an example of sexual antagonistic coevolution of Mae exploration behaviour and female resistance

males exploite females by suggesting they have genes they dont actually have (increase male fitness)


females evolve traits in response to male exploitation (increasingly female fitness decrease male)

describe the experiment on fruit flies for sexual antagonistic evolution in monogamy and polygamy groups

males in monogamy groups harassed females less and females have higher fitness and less evolved resistance

why do males harass females

because of differences in sexual investment males have higher optimal mating rates and have evolved traits to increase they making frequency

in a study with fruit flies so attractive (larger) females get more harm from males

yes, they're harassed more

what is convenience polyandry in females

when the cost of accepting another mate is lower than the cost of persistent harassment

describe the results testing female preference in fruit flies with high or high harm males

females not previously exposed to high harm males will spend more time around high harm males




females previously exposed to high harm makes will gain avoidance (spend less time over male chambers) and prefer low harm males

give an example of a post copulation sexual conflict

accessory gland proteins

describe the benefit in males from the sexual conflict of accessory gland proteins

increase sperm competition,


decrease mating receptivity of mate,


increased short term reproduce potential of mate,


speeds up ovulation

describe the benefits and cost in females from accessory gland proteins

benefits- increased short term reprdutvei potential




cost: decreases lifetime reproductive potential and life span

and is an accessory gland protein

protein in sperm to help sperm reach egg or effect female behaviour

true or false when makes have a high male-male competition they invest more in ejaculate traits and thus more harmful to females

true

what are intralocus sexual conflict

within genes


when fitness optimizing traits are controlled by the same gene between sexes




only one gene involvd

give an example of intralocus sexual conflict

one gene controls body size but selection favour large bodies in males and small females

describe the study for evidence of intralocus conflict

both male and female larva have the same body size but as adults they differ in body size based on reproductive benefits

what is Interlocus sexual conflict and give an example

between genes


when a fitness optimizing trait is controlled by different genes between sexes




ex) parental behaviour

do all males use exploitative behaviour

no

who uses more harmful exploitative behaviour dominant or submissive males and why

submissive males because they're not likely to win mates from fighting to they have the exploit females to reproduce