It is the presence of X and Y chromosomes in certain arrangements that is the ultimate cause of determining gender. Group of answer choices
Added by Matthew C.
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In humans, biological sex is primarily determined by the presence of specific sex chromosomes, namely the X and Y chromosomes. Show more…
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5. True/False: Because they are different in size and gene content, X and Y chromosomes don't pair during meiosis. 6. Development of phenotypic dimorphism (secondary sexual characteristics) in mammals is controlled by: A. The chromosomes an individual has, B. Genes an individual inherits (including SRY genes), C. Hormones an individual has, D. Signals from the cytoplasm of the mother. 7. If an individual had two X chromosomes and only one Y chromosome, we'd expect them to develop as (male/female). 8. If a Drosophila fly had two X chromosomes and three Y chromosomes, what sex would we expect that fly to be?
Madhur L.
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.
The genetic sex of a human is determined by a. ploidy, with the male being haploid. b. the Y chromosome. c. $X$ and $Y$ chromosomes, the male being $X X$. d. the number of $X$ chromosomes, the male being $X O$. e. $\mathrm{Z}$ and $\mathrm{W}$ chromosomes, the male being $\mathrm{ZZ}$.
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