What evolutionary advantages explain why the rate of sexual reproduction increased in roundworms exposed to live disease-causing bacteria? select all that apply. sexual reproduction decreased the proportion of offspring that were "unfamiliar" to the bacteria. sexual reproduction required less energy input and time than asexual reproduction. new allele combinations were advantageous in the presence of parasites with high mutation and reproduction rates. sexual reproduction increased genetic variability and survival in a changing environment?

The answers that apply are;

new allele combinations were advantageous in the presence of parasites with high mutation and reproduction rates.

sexual reproduction increased genetic variability and survival in a changing environment?

Sexual reproduction increases genetic variability due to combinations of alleles from the parents to the offsprings. This increases the chances that a particular combination may be able to confer resistance to the disease-causing bacteria and hence increase the survival of the roundworms population.  

the answer is b)3/8x+1

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.