things about social behaviour im ass at x Flashcards
how does cooperative hunting benefit a group of animals
- they can tackle large prey animals which they would not be able to tackle individually
- they will gain more food than they would by foraging alone
- all members of the social group will share food gained by cooperative hunting
why may it be harder to a hawk to prey on pigeons when the flock of pigeons is very large
- the larger the flcok the more difficult to target a single pigeon
- scattering of flock confuses the hawk
- greater chance of hawk being spotted
- large flock can mob the hawk
why is social hierarchy advantageous to the individuals involved
- aggression between members becomes ritualised
- real fighting it kept to a minimum
- serious injury is normally avoided
- energy is conserved
- experienced leadership is guaranteed
- the most powerful animals are likely to pass their genes onto the next generation
what is the bottleneck effect
this is when a significant percentage of a population or species is killed or otherwise prevented from reproducing
how does vasoconstriction reduce heat loss
vessels get narrower, so there is a reduced blood flow to the skin, so there is less heat loss. vise versa works for vasodilation
why can different mRNA transcripts be produced from the same primary transcript
- alternative RNA splicing
- depending on which exons and introns are retained
- different combinations of exons x, y, z etc can be spliced together to produce different transcripts
why does the F2 generation of crossbreeding not include the same favourable phenotypes than in F1
F2 has a variety of possible genotypes
why does caring for the queen’s offspring benefit the worker bees
- worker bees share genes with the queen’s offspring
- so worker bees increase the survival chances of these genes by caring for the queen’s young
