The sex chromosome composition of a person with Klinefelter's syndrome is

A) XXX
B) XXY
C) XO
D) XYY


Answer: B) XXY

Biology & Microbiology

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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.

Biology & Microbiology

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

Biology & Microbiology

The process by which pollen is transferred to the ovule is called

a. transmigration. b. fertilization. c. pollination. d. all of the above.

Biology & Microbiology

An herbivore occupies the third trophic level

____________________ Indicate whether the statement is true or false.

Biology & Microbiology