Reproductive isolating mechanisms
a. occur within a species.
b. can prevent members of the same species from reproducing.
c. only act after fertilization.
d. can prevent members of different species from interbreeding.
e. only act before fertilization.
D
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The destruction or removal of all viable organisms is called
A. antisepsis. B. sterilization. C. sanitization. D. disinfection.
The concept of mapping genes on chromosomes was developed by ____ when he was an
undergraduate student.
a. Watson b. Sturtevant c. Morgan d. Mendel e. Crick
Four-year old Sammy is having a temper-tantrum. In a final attempt to get his way, he yells to his mom, “I'm gonna hold my breath ‘til I die!” What is the primary reason that Sammy’s mom is unconcerned by this statement?
A. It is impossible for Sammy to control the contraction of his diaphragm and intercostal muscles since they are made up of smooth muscle. B. As Sammy holds his breath, the decreasing levels of oxygen in his blood will lead to stimulation of the respiratory control center in his brain. C. Sammy is too young to hold his breath for more than 30 seconds. D. As Sammy holds his breath, the increasing levels of carbon dioxide in his blood will lead to stimulation of the respiratory control center in his brain. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about respiration? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The migratory patterns of many animals encourage ____
a. a bottleneck b. mutation c. a founder effect d. gene flow e. genetic drift