sexual selection and inheritance Flashcards
what will the F2 phenotypic ratio generally be?
9:3:3:1
what is natural selection?
a process favouring traits that aid survival.
what is sexual selection?
a process favouring traits that aid reproduction and sexual success.
what is the pre-copulatory success?
success in finding a mate.
what is post-copulatory success?
success in the sperm fertilising the egg.
what is post-birth success?
success in raising offspring so it will live to reproductive age and pass on genes.
what is anisogamy?
when male and female gametes are different sizes.
what was reproductive skew?
the portion of a population that is capable of reproducing.
what is sexual dimorphism?
when males and female have different phenotypic characteristics other than their genitals.
what is a sneaking male tactic?
when a non-dominant male tries to steal a beat off a dominant males females.
what is sperm competition?
competition between different males’ sperm once inside the female.
what is lactational amenorrhea?
temporary infertility while the female is breastfeeding
what is an honest quality signal?
the upkeep of physical characteristics to flex reproductive success.
what is female cryptic choice?
females store multiple males’ sperm and choose the one that feel is strongest.
what is sex role reversal?
when males look after offspring.
