If Nondisjunction occurs during anaphase I how many of the gametes will be affected?
a. 4
b. 1
c. 2
d. 3
e. None
a
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What information is critical to the success of polymerase chain reaction (PCR) itself?
A) The DNA sequence of the ends of the DNA to be amplified must be known. B) The complete DNA sequence of the DNA to be amplified must be known. C) The sequence of restriction-enzyme recognition sites in the DNA to be amplified must be known. D) The sequence of restriction-enzyme recognition sites in the DNA to be amplified and in the plasmid where the amplified DNA fragment will be cloned must be known.
The human respiratory surface consists of
a. the walls of alveoli and pulmonary capillaries b. the walls of alveoli and pulmonary capillaries and their basement membranes c. the walls of bronchioles, alveoli, and capillaries d. the walls of bronchioles, alveoli, capillaries, and their basement membranes e. the walls of alveoli
What statement is correct in the following statment?
A. Speciation that begins with geographic isolation is known as allopatric speciation B. Allopatric speciation only happens in dispersal geographic isolation C. Speciation that begins with geographic isolation is known as sympatric speciation D. Sympatric speciation only happens in dispersal geographic isolation
What is a prion?
A. A highly wound circle of RNA B. A virus that has not yet acquired its envelope C. A protein that can alter the shape of a second protein D. The protein associated with a latent virus