Anita thinks that she has heterozygous alleles for red hair. If she is correct, which of these diagrams best illustrates Anita’s alleles for red hair? 2 chromosomes are labeled Upper R and Upper R.
2 chromosomes are labeled Upper R and r.
One chromosome is labeled Upper R and another is unlabeled.
2 chromosomes are labeled r and r.

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.

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