Macroevolution and Microevolution are both a genetic change in a species over time
a. true
b. false
Answer: a. true
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The Y chromosome can be used to trace ancestry because:
A. natural selection favors specific mutations in specific places. B. mutations in the Y chromosome occurred as people migrated around the globe. C. mutations in the Y chromosome are independent of mutations in mitochondria. D. mutations in the Y chromosome occur only in a few locations. E. nonmutant Y-chromosome genotypes are eliminated from human populations.
Choose all of the homeostatic variables that provide energy in animals.
_____ Water _____ Fat _____ ATP _____ Ca2+ _____ Glucose
Although penicillin inhibits peptidoglycan synthesis, bacterial cells will continue to grow normally in the presence of penicillin in a(n) ________ environment.
A. nonpolar B. isotonic C. hypotonic D. hypertonic
For a particular gene, if one gene in a million experiences a mutation each generation, what is its mutation frequency?
What will be an ideal response?