Biologists are not yet able to apply the phylogenetic species concept to all forms of life because ____
a. individuals within populations exhibit genotypic and phenotypic variation
b. detailed evolutionary histories have been described for relatively few groups of organisms
c. many forms of life reproduce asexually
d. evolutionary history cannot be determined for extinct species
e. it does not distinguish closely related species that are nearly identical in appearance
ANSWER: b
You might also like to view...
One way that the development of drug resistance in viruses has been reduced has been by the use of a cocktail of several drugs at high doses.
Answer the following statement true (T) or false (F)
Liverworts are capable of asexual reproduction by forming small, broken pieces of the plant that are splashed out when hit by the rain. What is the name of the structure that holds these small pieces?
a. thallus b. gametophyte c. gemma cup d. sporophyte
Which of the following is made during a secondary active transport process?
a. glucose b. oxygen c. ATP d. carbon dioxide
In one sense, microevolution is _______________ and macroevolution is _______________.
a. punctuated; random b. process; result c. gradual; punctuated d. result; process e. adaptive; innovative