Exam 3 Questions With Multiple Choices And Verified Answers 100% Guaranteed Solution.
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Homologous pairs of chromosomes separate during: - correct answer E. meiosis I only
At the end of mitosis the daughter cells are _____, whereas at the end of meiosis the daughter cells are _____. - correct answer ...
Homologous pairs of chromosomes separate during: - correct answer E.
meiosis I only
At the end of mitosis the daughter cells are _____, whereas at the end of meiosis the daughter cells are
_____. - correct answer A. Diploid; haploid
The correct sequence of steps in the eukaryotic cell cycle is: - correct answer
A. G1 → S phase → G2 → mitosis → cytokinesis
Paramecium is a single-cell eukaryotic organism that can reproduce by mitotic cell division. Prior to the
M phase of the cell cycle, which of the following must occur? - correct answer
A. The cell must replicate its chromosomes
There are two stages to the cell cycle. M phase and interphase. - correct answer
A. true
Which major checkpoint delays the cell cycle when DNA replication is incomplete? - correct answer
C. G2 Checkpoint
What feature of double-stranded DNA makes it necessary to have a leading strand and a lagging strand
during replication? - correct answer A. the antiparallel orientation of the
strands
In a long DNA molecule, each origin of replication produces a ________ with a ______ on each side. -
correct answer C. replication bubble; replication fork
The enzyme reposnisble got extending and proofreading a growing DNA strand and for replacing
mismatched nucleotides is - correct answer E. DNA Polymerase
, In replication of a linear double-stranded DNA molecule, one end of each strand becomes shorter in
each round of replication. This happens because: - correct answer A. the RNA
primer cannot be replaced at the very end of a lagging DNA strand leaving a hanging section of the
telemere on one side
When we say that DNA replication is semiconservative, we mean that: - correct answer
A. when DNA is replicated, each new double helix contains one parental strand and one newly
synthesized daughter strand.
Which enzyme is the first to bind to the DNA sequences at the orgin of replication to start breaking the
hydrogen bonds? - correct answer C. DNA helicase
Gel electrophoresis seperates DNA fragments based on: - correct answer D.
length
During the process of PCR, what plays the role in the test tube that helicase plays in the cell? - correct
answer B. heat
you can predict the number of genes an organism and how big its genome is based on how complex it is
compared to people. Example: A single-celled amoeba will always have a smaller genome than a
multicellular organism. - correct answer B. false
At the end of 35 cycles of PCR, you have what magnitude of how many new pieces of DNA? - correct
answer E. billion
With regard to alleles that encode different forms of the phenylthiocarboamide taste receptors in
humans, which optices are phenotypes? Select all that apply. - correct answer
B+C. taster and nontaster
A polymorphism is a nucleotide pair, gene, or region of the genome: - correct answer
A. that has escaped DNA repair mechanisms sometime in the past.
An individual is heterozygous for a gene if: - correct answer C. he or she
developed from sperm and egg that carried different alleles
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