When a human sperm carrying a Y chromosome fertilizes a normal egg, the gender of the offspring _____.
A) will be female
B) could be either, depending on the temperature at the time of fertilization
C) will be male
D) additional information is needed before the question can be answered
Answer: C) will be male
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A cell in G2 before meiosis begins, compared with one of the four cells produced at the end of meiosis II, has
A. twice as much DNA and twice as many chromosomes B. four times as much DNA and twice as many chromosomes C. twice as much DNA but the same number of chromosomes D. four times as much DNA and four times as many chromosomes E. twice as much DNA and half as many chromosomes
You wish to obtain a pure mitochondria sample from lysed cells. The best way to obtain this sample would be
A) centrifugation. B) chromatography. C) polyacrylamide gel electrophoresis. D) agarose gel electrophoresis. E) both choices A and C
DNA is contained in the _____ of the cell nucleus.
a) proteins b) cytoplasm c) chromosomes d) RNA
What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons?
A) 6 B) 8 C) 12 D) 18