Which of the following describes the modern synthesis?
A. It is a coherent understanding of the relationship between natural selection and genetics
B. It describes how natural selection can affect a population genetic make-up that can result in the gradual evolution of populations and species
C. It connects the gradual change of a population over time with processes that give rise to new species and higher taxonomic group with widely divergent characteristics
D. All of the above
D. All of the above
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What occurs when an inducer is added to an environment containing an organism with a metabolic pathway controlled by a repressor?
A) The inducer combines with the repressor and activates the pathway. B) The inducer combines with the repressor and inactivates the pathway. C) The inducer combines with the substrate and blocks induction. D) The inducer does not combine with, but functions as a chaperone molecule for, the enzyme-substrate complex.
Which of the following would be considered density-independent factors that could affect the growth of a population?
A. predation B. droughts C. parasitism D. resources E. disease
Helical, polyhedral, or complex are all examples of what morphological characteristic of viruses?
a. nucleic acid form b. capsomere sequence c. capsid shape d. 16S rRNA
Blood tests for cancer detect the presence of ____
a. cancer cells b. DNA c. carcinogens d. tumor markers e. enzymes