A conclusion whose validity can be meaningfully tested using observable data is an example of:
A. empirically testable conclusion.
B. direct proof.
C. inductive reasoning.
D. data mining.
Answer: A
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Which of the following mechanisms leads to INCREASED transcriptional activity?
A) An sRNA binds to the ribosome binding site. B) Ribonuclease activity is blocked by sRNA complementary binding to the end of a transcript. C) The ribosome binding site is made available from sRNA binding to part of it. D) Recruitment of RNA polymerase is enhanced when sRNA binds to and removes a repressor.
In Guinea pigs, short hair (S) is dominant over long hair (s), rough coat (R) is dominant over smooth coat (r), and black hair (B) is dominant over white hair (b)
List all the different possible gametes that can be produced by each of the individuals below. a. SSRRbb b. ssRrBB c. SsRrbb d. SsRrBb
Memory cells "remember" the antigen and make a faster and greater response the next time the antigen is encountered.
a. true b. false
Scientists sometimes use gene sequencing to establish a family tree. A family tree shows the evolutionary relationship between various species. The fewer the differences that are present in the genetic makeup between two species, the closer their evolutionary relationship. What type of evidence does gene sequencing represent?
A) comparative embryology B) identification of a common ancestor C) molecular biology D) comparative anatomy