It has been discovered that the genetic material is PROTEIN.

a. true
b. false


Ans: b. false

Biology & Microbiology

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The data in the previous graphs indicate that _____

A) a hybrid zone was established after the completion of the bridge B) there was no migration between the two squirrel populations after the bridge was completed C) gene flow occurred from one type of squirrel into the gene pool of the other type of squirrel D) two-way migration of squirrels occurred across the bridge, but without hybridization E) some northern squirrels migrated south, but no southern squirrels migrated north across the bridge

Biology & Microbiology

Which naturalist first proposed the theory of

catastrophism?

a. Lyell b. Lamarck c. Darwin d. Cuvier e. Aristotle

Biology & Microbiology

Why did most scientists assume that the bases of DNA should be on the outside of the helix?

a. the bases were easily digested by DNA cutting enzymes b. the hydrogen bonding between sugar and phosphate would form a helix as well c. the bases needed to be accessible for replication d. a single-stranded DNA molecule would not be able to support the bases on the interior e. the bases were hydrophobic

Biology & Microbiology

The vascular bundles inside a typical eudicot stem are arranged in a characteristic ring, which divides the stem’s

ground tissue into the ____ (inside the ring) and the ____ (outside the ring).

a. cortex; pith b. pith; cortex c. pith; cambium d. cambium; cortex e. cortex; epidermis

Biology & Microbiology