A series of experiments shows that oil content in a diploid grain is influenced by five genes (a through e) with additive alleles. Each gene contributes an equal amount to the oil content. The highest producing strain is 20% oil content; the lowest has close to 0%. A plant of unknown genotype has an oil content of 12%. What is a possible genotype for this plant? (+ = additive alleles) a. a+a+b+b+c+c+d+de+e

b. a+a+b+b+ ccddee

c. a+a+bbccddee

d. aab+bc+cd+d+e+e+

e. aab+bccdd+ee+

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.

d. organisms have cells with different shapes and functions.