The sex chromosome composition of a person with Klinefelter's syndrome is
A) XXX
B) XXY
C) XO
D) XYY
Answer: B) XXY
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Which of the following statements is false?
A. It is not possible to eradicate a disease. B. Global travel spreads pathogens more quickly than ever before. C. The evolution of drug-resistant pathogens is on the rise. D. Failure to follow treatment regimens drives the evolution of drug resistance. E. Scientists are engaged in an evolutionary arms race with disease-causing organisms.
Which is not an example of a induced mutational mechanism?
A. DNA replication errors B. Tautomeric shifts of nucleic acid bases C. Aberrant recombination D. UV light E. Transposable elements
The process by which pollen is transferred to the ovule is called
a. transmigration. b. fertilization. c. pollination. d. all of the above.
An herbivore occupies the third trophic level
____________________ Indicate whether the statement is true or false.