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NUR3306 GENETICS COMPLETED EXAM WITH RATIONALES 2024
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NUR3306 GENETICS COMPLETED EXAM WITH RATIONALES 2024
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NUR3306Genetics
COMPLETED EXAM w/
RATIONALES
2024
,1. Which of the following terms refers to a section of DNA
that contains the instructions for building one or more
proteins?
a) Gene
b) Chromosome
c) Allele
d) Genome
Answer: a) Gene
Rationale: A gene is a specific segment of DNA that
provides the instructions for building proteins or functional
RNA molecules.
2. Which of the following is responsible for transferring
genetic information from the nucleus to the cytoplasm?
a) Chromosome
b) Ribosome
c) RNA polymerase
d) Messenger RNA
Answer: d) Messenger RNA
Rationale: Messenger RNA (mRNA) is formed from a
DNA template during transcription and carries the genetic
information from the nucleus to the cytoplasm.
, 3. In which phase of the cell cycle does DNA replication
occur?
a) G1 phase
b) S phase
c) G2 phase
d) M phase
Answer: b) S phase
Rationale: DNA replication occurs during the S (synthesis)
phase of the cell cycle, wherein DNA is duplicated in
preparation for cell division.
4. Which of the following statements regarding alleles is
correct?
a) Alleles are alternative forms of genes that are located on
different chromosomes.
b) Alleles are always inherited in pairs, with one allele
coming from each parent.
c) Alleles are specific locations within a gene.
d) Alleles are responsible for determining the sex of an
individual.
Answer: a) Alleles are alternative forms of genes that are
located on different chromosomes.
Rationale: Alleles are different variations or versions of a
gene that occupy the same position (locus) on homologous
chromosomes.
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