"in the p (parental) generation, a female fly with pink eyes and short antennae was crossed with a male fly having red eyes and long antennae. when two f1 individuals were crossed and a large number of f2 individuals were counted, there were no f2 individuals with pink eyes and long antennae, and no f2 individuals with red eyes and short antennae." this result contradicts which hypothesis?

cross breeding

Explanation:

Py (Py Py) (Py Py) (Py rY) (PyrY)

rY (PyrY) ( PyrY ) ( rYrY ) (rYrY )

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.

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.