The problem with the biological species concept is that it assumes that organisms regularly
A. outcross.
B. undergo mitosis.
C. reproduce asexually.
D. inbreed.
Answer: A
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Which of the following is true of carbon?
A) It forms only polar molecules. B) It can form a maximum of three covalent bonds with other elements. C) It is highly electronegative. D) It can form both polar and nonpolar bonds.
Consider a diploid organism (2n) with a haploid complement (n) of four chromosomes. At prophase I, how many total chromosomes will be present in a cell?
A. four, one complete set of chromosomes B. eight, four pairs of homologous chromosomes C. 12, four pairs of homologous chromosomes and their haploid complement D. 16, four pairs of homologous chromosomes and two sister chromatids per chromosome
When members of two different populations breed, which selection pressure has occurred?
a. Genetic drift b. Natural selection c. Sexual selection d. Gene flow e. Founder effect
Rubisco combines ribulose bisphosphate with carbon from
A. ATP. B. glucose. C. carbon dioxide. D. carbon monoxide. E. organic compounds.