The idea that femaleness is simply what happens when an embryo does not develop as a male is no longer supported by evidence because of the discovery of Multiple Choice the SRY gene in females gene that suppress all of the genes on a female's Y chromosome hormones that suppress expression of SRY genes in females genes whose expression is necessary for female structures to develop
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This implies that there is an active process or specific genetic components that drive female development, rather than it being a default state. Show more…
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In mammals, individuals with two X chromosomes are female, and individuals with an X and a Y chromosome are male. It had long been known that a gene located on the Y chromosome was sufficient to induce the gonads to form testes, which is the main male-determining factor in development, and researchers sought the product of this gene, the so-called testes-determining factor (TDF). For several years, the TDF was incorrectly thought to be a zinc finger protein encoded by a gene called BoY. Which of the following observations would most strongly suggest that BoY might not be the TDF? Explain your answer. (a) Some XY individuals that develop into females have mutations in a different gene, SRY, but are normal at BoY. (b) BoY is not expressed in the adult male testes. (c) Expression of BoY in adult females does not masculinize them. (d) A few of the genes that are known to be expressed only in the testes have binding sites for the BoY protein in their upstream regulatory sequences, but most do not.
Sri K.
In humans, if an XY individually had a selection of the SYR gene, that person would develop as a female because why? why would it not be male? why is it female please explain.
Adi S.
Consider the following statement: There are small regions on the X and Y chromosomes of humans that are homologous. This statement is True False A human female is shown to have an XY karyotype. Which of the following could explain this phenotype given the karyotype? a. The individual's X chromosome has been inactivated. b. The individual may have suffered a chromosomal deletion of the X chromosome that contained the female determining region. c. The individual may have experience a deletion of a region of the Y chromosome that contained the sry gene. d. a, b or c could explain this karyotype.
Shaiju T.
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