How does peer review influence the development of scientific theories?
A. Peer review allows other scientists to know what is current in their field.
B. Careful evaluation of research results by other scientists ensures that only solid and legitimate research results are published, and helps prevent faulty research or false claims from being viewed as scientific fact.
C. Peer review increases competition among scientists and thus increases the quality of the published work.
D. Peer review makes it extremely difficult for work to be published other than earth-shattering scientific theories.
B
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Cephalization is:
A. the development of a "head end" in an organism. B. the concentration of sensory organs at one end of an animal. C. the development of a brain. D. All of the answer options are correct.
Below is a pedigree of a human genetic disease in which solid color indicates affected individuals. Assume that the disease is caused by a gene that can have the alleles A or a. What is/are the possible genotype(s) of person 2?
A) AA
B) Aa
C) Either AA or Aa
D) aa
E) Cannot be determined
The deepest layer of the skin is the stratum corneum
____________________ Indicate whether the statement is true or false.
A gene that codes for a protein was removed from a eukaryotic cell and inserted into a prokaryotic cell. Although the gene was successfully transcribed and translated, it produced a different protein than it produced in the eukaryotic cell. What is the most likely explanation?
A. Eukaryotic genes often contain introns while prokaryotic genes do not. B. Eukaryotic transcripts have a 5' cap while prokaryotic transcripts do not. C. There are slight differences in the genetic code for prokaryotes and eukaryotes. D. Unlike eukaryotes, which have three different RNA polymerases, prokaryotes have a single RNA polymerase.