In this lab, you will simulate birds with three different beaks. after watching the birds feed, you will remove fruit to simulate a change in the environment. what question are you answering by doing this observation? write it by filling in the blanks below. what is the effect of… …on…

oceans

indian ocean

pacific ocean

atlantic ocean

arctic ocean

southern ocean

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.