What events can lead to offspring having a unique arrangement of their parents' genes?
A) Crossing over
B) Independent assortment
C) Both of these
D) Neither of these
C
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The most prevalent cause of wine spoilage is the presence of
A. sulfur dioxide. B. carbon dioxide. C. acetic acid bacteria. D. ethanol.
The discovery of ____ suggested that nucleic acids likely existed prior to proteins
a. RNA b. ribozymes c. RNA polymerase d. peptide bonds e. endoplasmic reticulum
How was the approach taken by Mendel similar to the approaches taken by modern scientific inquiry?
A) Mendel repeated his experiments. B) Mendel examined both continuous and discrete traits. C) Mendel used the same technical methods that are used today. D) Mendel's experiments challenged no hypotheses that were favored at the time.
In E. coli cells, when lactose is absent from the environment,
A. no b-galactosidase, lactose permease, andgalactosidetransacetylas are made. B. polycistronic mRNA levels would be very high. C. trace amounts of b-galactosidase, lactose permease, and galactosidetransacetylase are made. D. the lac operon is induced. E. large amounts of b-galactosidase, lactose permease, and galactosidetransacetylase are made.