Sense mutations produce ____
a. elongated proteins
b. shortened proteins
c. extra termination codons
d. frameshifts
e. cell death
a
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Crossing over is an event associated with mitosis
a. Yes b. No
If 15 percent of the nitrogenous bases in a sample of DNA from a particular organism is thymine, what percentage should be cytosine?
A) 30 percent B) 35 percent C) 70 percent D) 15 percent E) 40 percent
Which feature of cycads distinguishes them from most other gymnosperms?
1. They have exposed ovules. 2. They have flagellated sperm. 3. They are pollinated by animals. A) 1 only B) 2 only C) 3 only D) 2 and 3
The goal of the streak plate technique is to
A) compare how the shape, color and margin differ in colonies from a pure culture. B) isolate a pure culture for study from a single colony. C) spread out a thick layer of bacteria and isolate the bacteria that outcompete the rest. D) compare all of the colonies on a plate with a mixed culture. E) visualize all of the colonies on a plate from a pure culture.