The function of helicase enzymes is to
a. break hydrogen bonds and unwind the two
strands of the DNA molecule prior to
replication.
b. rewind the two DNA molecules after
replication.
c. remove bases that might have been inserted
incorrectly.
d. seal new short stretches of nucleotides into
one continuous strand.
e. fragment old DNA that is no longer of use
to the cell
A
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The first group to exhibit an amniotic egg was the
a. Aves. b. Amphibia. c. Reptilia. d. Osteichthyes. e. Mammalia.
Genes that are duplicated within a genome and later diverge in function, such as the RNASE1 and RNASE1B genes in douc langur monkeys, are described as ________
A) duplicated genes B) orthologous genes C) homologous genes D) paralogous genes E) derived genes
Duplicated centrioles move to opposite poles of a dividing __________ cell during __________ of the
cell cycle. a. plant; metaphase b. plant; anaphase c. prokaryotic; metaphase d. animal; interphase e. animal; prophase
In eukaryotic cells, transcription occurs in the nucleus and translation occurs in the cytoplasm
a. true b. false