Which of the following occurs during prophase?
A) Chromosomes line up on the midline of the cell.
B) The nuclear envelope forms.
C) Sister chromatids separate.
D) The mitotic spindle begins to form.
Answer: D) The mitotic spindle begins to form.
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If an XY human had a genetic disorder that causes insensitivity to androgens, that person's genotype and phenotype would be
A. XX, female. B. XX, male. C. XY, female. D. XY, male.
Taxol is an anti-cancer drug that prevents uncontrolled cell proliferation by stabilizing microtubules, which causes arrest of the cell cycle
If dividing cells are treated with Taxol, at what stage of the cell cycle would you predict the arrest would occur? A. prophase B. metaphase C. anaphase D. telophase E. G1 of interphase
A group of international students is having a heated discussion in the dining hall. “Your country needs to get its population under control!” asserts a student from the United States. “Perhaps,” replies the Indian student, “but your country ______________________.”
A. has the highest per capita resource consumption, ten times greater than mine B. also has a big population overgrowth problem C. has a much higher birth rate D. has the lowest infant mortality rate
Which phylum is associated with all of these terms: asymmetry, choanocytes, filter feeding, osculum, and spicules?
a. Porifera b. Nematoda c. Ctenophora d. Nemertea