In 1952, Hershey and Chase confirmed Avery's (1944) conclusion that
A. proteins are the repositories for hereditary information.
B. DNA is the repository for hereditary information.
C. RNA is the repository for hereditary information.
D. each DNA molecule is composed of two strands that are twisted into a double helix.
E. the replication of DNA is semiconservative.
B. DNA is the repository for hereditary information.
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Archaeal flagella are superficially similar to bacterial flagella, although archaeal flagella are much thicker than bacterial flagella.
Answer the following statement true (T) or false (F)
In the life cycle of a flowering plant, the ___
a. sporophyte is dominant b. gametophyte is dominant c. sporophyte initially is dominant and then the gametophyte becomes dominant d. gametophyte is initially dominant and then the sporophyte becomes dominant e. gametophyte and sporophyte are codominant.
In Mendel's day, "particulate" inheritance would have made less sense to people than blending inheritance. Why?
What will be an ideal response?
Natural selection acts only on traits that are _____.
A. advantageous in a certain environment B. disadvantageous C. advantageous D. heritable