About which of these did Darwin have a poor understanding?
A) that individuals in a population exhibit a good deal of variation
B) that much of the variation between individuals in a population is inherited
C) the factors that cause individuals in populations to struggle for survival
D) the sources of genetic variations among individuals
E) how a beneficial trait becomes more common in a population over the course of generations
Ans: D) the sources of genetic variations among individuals
You might also like to view...
To be useful for phylogenetic reconstruction, a taxonomic character must exhibit which of the following properties? Select all that apply
A. It must vary among the taxa being analyzed, but not within individual taxa. B. It must have a genetic basis. C. It must be anatomical. D. It must be molecular (DNA or protein). E. None of these
Diversity indices such as the Shannon diversity index are very valuable to
A. agricultural economists who study crop production. B. researchers calculating evapotranspiration rates. C. the formation of climax communities. D. conservation biologists who study rare species. E. scientists studying microbial diversity.
When exposed to water, sodium chloride (NaCl) ____.
A. dissolves into Na+ and Cl- ions B. crystallizes into a solid C. dissolves into Na- and Cl+ ions D. crystallizes into a liquid E. forms a hydrophobic compound
Inflammation and fever both function to
a. increase pathogen growth. b. limit blood flow to tissues. c. limit growth of pathogens. d. destroy tissues.