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Biod 101
Biod 101 module 4 Exam Questions with
Correct Verified Answers Latest Update
(2025/2026) Guaranteed Pass
What is the role of the centriole during the cell cycle? - ANS ✓A centriole
is a short, cylindrical protein filament composed of tubulin that plays a
role in the formation of the mitotic spindle.
Why is the cell control system important? - ANS ✓It's essential for
normal cellular growth and development. It controls the timing and rate
of the cell cycle
The cell cycle is controlled by - ANS ✓1. Molecules called cyclins &
cyclin dependent kinase
2. Cellular spindles
Name each major checkpoint of the cell cycle - ANS ✓1. G1 checkpoint
- cell committed to division once it passed this ✅point
2. G2 checkpoint- evaluates newly duplicated DNA before mitotic
division. Ensures quality of DNA
3. M checkpoint- spindle checkpoint that occurs during anaphase.
Ensures spindles are correctly attached to kinetochore
Difference between haploid and diploid cells - ANS ✓Haploid cells only
have one copy of each chromosome represented by n (22 autosomes
and 1 sex chromosome)
Diploid - has two copies of each chromosome represented by 2n (46
autosomes and 2 sex chromosomes),
What happens during the 2 main phases of meiosis - ANS ✓Meiosis l-
separation of homologous chromosomes
Meiosis ll- separation of sister chromatids
Biod 101
, 2
Biod 101
Which phase of meiosis does what - ANS ✓Prophase 1 - condensation
& lining up gene by gene along length for crossing over
Metaphase 1 - lining up in the middle
Anaphase 1 - moving apart
Telophase 1 (including cytokinesis)
Name the most common chromosomal abnormality in humans - ANS
✓Trisomy 21 - Down syndrome
Define the Law of Segregation - ANS ✓Alleles for a trait becomes
separated, and end up in two differentgametes
Define the law of independent assortment - ANS ✓2 or more genes are
independent of each other.
The law of independent assortment states that two or more genes
(inheritable characteristics) are independent of the other. Specifically,
each pair of alleles in a somatic cell will separate and segregate into
separate gametes randomly. It is important to note that Mendel's law
only applies to traits that are located on different chromosomes.
Which dominance does what - ANS ✓Codominance - the traits of both
alleles are expressed in the phenotype
Incomplete dominance- offspring have different phenotypes from parents
Complete dominance- the phenotype for a dominant trait is exhibited
regardless of the genotype
What is the difference between a genotype versus a phenotype? - ANS
✓Genotype - genetic make up
Phenotype- physically observable traits
What is pleiotropy? - ANS ✓The ability of a single gene to have multiple
phenotypic effects.
What isthe interphase? - ANS ✓Collectively, the G1, G2, and S phases
represent interphase.
Biod 101
Biod 101
Biod 101 module 4 Exam Questions with
Correct Verified Answers Latest Update
(2025/2026) Guaranteed Pass
What is the role of the centriole during the cell cycle? - ANS ✓A centriole
is a short, cylindrical protein filament composed of tubulin that plays a
role in the formation of the mitotic spindle.
Why is the cell control system important? - ANS ✓It's essential for
normal cellular growth and development. It controls the timing and rate
of the cell cycle
The cell cycle is controlled by - ANS ✓1. Molecules called cyclins &
cyclin dependent kinase
2. Cellular spindles
Name each major checkpoint of the cell cycle - ANS ✓1. G1 checkpoint
- cell committed to division once it passed this ✅point
2. G2 checkpoint- evaluates newly duplicated DNA before mitotic
division. Ensures quality of DNA
3. M checkpoint- spindle checkpoint that occurs during anaphase.
Ensures spindles are correctly attached to kinetochore
Difference between haploid and diploid cells - ANS ✓Haploid cells only
have one copy of each chromosome represented by n (22 autosomes
and 1 sex chromosome)
Diploid - has two copies of each chromosome represented by 2n (46
autosomes and 2 sex chromosomes),
What happens during the 2 main phases of meiosis - ANS ✓Meiosis l-
separation of homologous chromosomes
Meiosis ll- separation of sister chromatids
Biod 101
, 2
Biod 101
Which phase of meiosis does what - ANS ✓Prophase 1 - condensation
& lining up gene by gene along length for crossing over
Metaphase 1 - lining up in the middle
Anaphase 1 - moving apart
Telophase 1 (including cytokinesis)
Name the most common chromosomal abnormality in humans - ANS
✓Trisomy 21 - Down syndrome
Define the Law of Segregation - ANS ✓Alleles for a trait becomes
separated, and end up in two differentgametes
Define the law of independent assortment - ANS ✓2 or more genes are
independent of each other.
The law of independent assortment states that two or more genes
(inheritable characteristics) are independent of the other. Specifically,
each pair of alleles in a somatic cell will separate and segregate into
separate gametes randomly. It is important to note that Mendel's law
only applies to traits that are located on different chromosomes.
Which dominance does what - ANS ✓Codominance - the traits of both
alleles are expressed in the phenotype
Incomplete dominance- offspring have different phenotypes from parents
Complete dominance- the phenotype for a dominant trait is exhibited
regardless of the genotype
What is the difference between a genotype versus a phenotype? - ANS
✓Genotype - genetic make up
Phenotype- physically observable traits
What is pleiotropy? - ANS ✓The ability of a single gene to have multiple
phenotypic effects.
What isthe interphase? - ANS ✓Collectively, the G1, G2, and S phases
represent interphase.
Biod 101
