The hypothesis that RNA served as the genetic information of early life is called _________________.
A. ribozyme evolution hypothesis
B. RNA world hypothesis
C. central dogma of molecular biology
D. hydrothermal synthesis
E. DNA transcription hypothesis
Answer: B
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In common English, "linkage" refers to one event that tends to occur when another does. In genetics, linkage has a precise meaning. It refers to the transmission of
A) two genes that have the same effect. B) two genes on different chromosomes. C) two genes on the same chromosome. D) genotype and phenotype to an offspring.
Four of the following were innovations that led to new adaptive zones. Select the exception
a. flight-capable wings in birds b. amniotic eggs in early reptiles c. Galápagos finches evolved to eat differently sized seeds d. sperm cells carried in pollen grains in seed plants e. silk glands in spiders
Which experiment would not be considered an ecological study?
A) the effect of a housing development on a spotted salamander population in a vernal pool B) the effect of changing availability of acorns on a population of squirrels C) the effect of a red tide outbreak on sea birds in the area D) the effect of a hormone on the rate of blood vessel formation
Green fluorescent protein is used to
a. label antibodies. b. visualize proteins in living cells. c. photobleach other fluorescent proteins. d. label DNA sequences.