Which of the following is/are mechanisms of horizontal gene transfer?
a. transformation
b. transduction
c. conjugation
d. all of the above
Answer: D
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Protein catalysts involved in the acceleration of the rate of chemical reactions are called
A) catalytic converters. B) growth agents. C) evolutionary molecules. D) enzymes.
The neutral subatomic particle is the ____
a. neutron b. proton c. electron d. quark e. Higg's boson
The disappearance of dinosaurs about 65 million years ago is an example of ____
a. adaptive radiation b. natural selection c. genetic drift d. mass extinction e. minor extinction
In Thomas Hunt Morgan's experiments, the ratio of red-eyed flies to white-eyed flies appeared to follow a simple Mendelian pattern of inheritance. What observation(s) did he make that led to his conclusion that the white-eyed trait was actually not a simple Mendelian trait?
A. He was able to correlate the expression of white eyes to the inheritance of an X chromosome. B. He was able to correlate the expression of white eyes to the inheritance of an X chromosome because only F2 males had white eyes and the trait is recessive. C. He saw that only males had white eyes. D. He observed that the white-eyed trait was recessive. E. He was able to correlate the expression of white eyes to the inheritance of a Y chromosome because only F2 males had white eyes and the trait is recessive.