Criado por J yadonknow
mais de 6 anos atrás
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Questão | Responda |
Natural selection (3) | 1. Variance between individuals 2. Variance effects survival 3. Variance is inherited |
Sexual selection variance (3) | 1. Variance between individuals 2. Variance affects reproductive success 3. Variance is inherited |
Heritability of behaviour plotted | |
"Gene for" calling rates giving rise to sexual selection | Traits for song are heritable "Gene for" calling rate exists Heritable variation in calling rate |
What does "gene for" mean? | means heritable variance |
What do female crickets prefer? | High chirp rate Long chirp duration Loud chirps |
Environmental influences on call rate | whether there are males around or not (satellite males) Ambient 'c Presence of females |
Basenji vs. cocker spaniel | tameness: low high One /dom. gene aggressive play: high low / 2 genes, recessive barking high low 2 dom. genes oestrus 12 months 6 months 1 recessive gene |
What is "gene for" behaviour? | A genetic change giving rise to variance in behaviour |
Artificial selection for behaviours may involve ___ | Pleiotropic effects on other traits e.g. domestic orca fin curls |
What genes influence bird migration? | Gene controlling coricosterone Gene controlling melatonin Gene controlling magnetic cues |
Gene controlling coricosterone influence (3) | Foraging activity Migratory fuelling rate Departure fuel load |
Gene controlling melatonin influence (3) | Migratory restlessness Departure decisions Duration of migratory flights |
Gene controlling orientation and magnetic cues influence | Migratory routes |
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