The biological species concept, formalized by Ernst Mayr in 1942, defined a species as a ________
A) group of individuals that inhabit the same location
B) group of individuals with similar morphological characteristics
C) population within and among which individuals actually or potentially interbreed and outside of which they do not interbreed
D) group of individuals who share similar allelic frequencies
E) population of individuals within and among which reproduction takes place frequently
C
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In eukaryotes, each type of RNA polymerase recognizes a different
A. start codon B. stop codon C. promoter D. release factor E. transcription factor
Acquired immune tolerance is the body's ability to produce T cells and antibodies against antigens such as microbial antigens, while "tolerating" ________.
Fill in the blank(s) with the appropriate word(s).
Which is NOT true about gene mutations?
a. All are transmitted to the next generation. b. They are rare but their rates can be predicted. c. Those with beneficial effects will be favored by natural selection. d. Many reduce an individual’s chance of surviving and reproducing. e. Those with neutral effects neither help nor hurt the individual.
Parvoviruses are among the simplest known DNA viruses of animals.
Answer the following statement true (T) or false (F)