7 Questions
Do hormones control sex phenotype?
Yes, hormones play a crucial role in determining sex phenotype.
What did Jost do to the embryos?
Jost surgically removed the portion of each embryo that would form the ovaries or testes.
How did Jost determine the sex of the baby rabbits?
Jost made note of their chromosomal sex and whether their genital structures were male or female.
What happened to the embryos when their embryonic genitals/gonads were removed?
The embryos became female, even if they had male chromosomes.
What is the conclusion drawn from Jost's experiment?
Chromosomes alone are not enough to determine sex; further signals from the gonads are required.
What determines the sex phenotype in addition to chromosomes?
Hormones from the gonads are necessary to determine sex phenotype.
What is the main finding of Jost's experiment?
The experiment shows that hormones, in addition to chromosomes, are necessary to determine the sex phenotype.
Test your knowledge on the interplay of tropic and sex hormones in mammalian reproduction. Discover how the hypothalamus, gonadotropin-releasing hormone, and pituitary hormones regulate this essential biological process.
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