Which of the following is/are mechanisms of horizontal gene transfer?

a. transformation
b. transduction
c. conjugation
d. all of the above


Answer: D

Biology & Microbiology

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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.

Biology & Microbiology

The neutral subatomic particle is the ____

a. neutron b. proton c. electron d. quark e. Higg's boson

Biology & Microbiology

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

Biology & Microbiology

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.

Biology & Microbiology