In humans, the male has an X and a Y sex chromosome. The human female has two X chromosomes. In birds, the female has a Z and a W sex chromosome while the male has two Z chromosomes. Which of the following statements is accurate about which parent determines the gender of the offspring based on inheritance of the necessary sex chromosome?
A. In humans and birds, the female determines the gender of all the offspring.
B. In humans and birds, the male determines the gender of all the offspring.
C. In humans, the male determines the gender of the offspring, and in birds the female determines the gender.
D. In humans, the female determines the gender of the offspring, and in birds the male determines the gender.
E. Determination of the gender of any human or bird offspring is related to the environmental conditions at the time of conception.
Answer: C
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