A chromosome contains the following gene order: A B C D • E F G H Which of the following rearrangements represents a pericentric inversion?
A) A B C • D E F G H
B) A F G H • B C D E
C) A C B D • E F G H
D) A F D E • C B G H
E) A B C D • H G F E
D
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If autopolyploidy is responsible for the formation of a tetraploid grape (with extra-large fruit) from a diploid population (with smaller fruit), which of the following events must have occurred?
A. Mating of diploid individuals to individuals from a different species of grape B. Doubling of chromosome number in the diploid population C. Halving of chromosome number in the diploid population D. A point mutation that produces extra-large fruit
Which of the following would be affected when a protein is denatured?
a. primary structure b. side chains c. tertiary structure d. amino groups
If a cell's lysosomes were damaged, which of the following would most likely occur?
A. The cell would produce more proteins than it needs. B. The cell would have chloroplasts that appear yellow rather than green. C. The cell would be less able to break down molecules in its cytoplasm. D. The cell would be less able to regulate the amount of fluid in its cytoplasm.
The human reproductive system is regulated by
A. restriction enzymes B. antigens C. complexcarbohydrates D. hormones