FINAL PRACTICE QUESTIONS Flashcards
Which checkpoint ensures that all chromosomes are properly a5ached to the spindle
apparatus before anaphase begins?
A: G1 checkpoint
B: G2 checkpoint
C: M checkpoint
D: S checkpoint
E: G0 checkpoint
B: G2 checkpoint
What is the primary outcome of meiosis in sexual reproduction?
A: Production of somatic cells
B: Production of identical daughter cells
C: Production of RNA
D: Replication of DNA
E: Production of haploid gametes
E: Production of haploid gametes
During which phase of meiosis do homologous chromosomes exchange genetic
material?
A: Prophase I
B: Prophase II
C: Metaphase I
D: Metaphase II
E: Telophase I
A: Prophase I
Which structure forms during prophase I and is critical for homologous recombination?
A: Synaptonemal complex
B: Spindle fibers
C: Centrosomes
D: Nucleolus
E: Nuclear envelope
A: Synaptonemal complex
- Which of the following statements is true about meiosis II?
A: Homologous chromosomes separate during meiosis II
B: DNA replication occurs during prophase II
C: Sister chromatids separate during meiosis II
D: Genetic recombination occurs during meiosis II
E: Meiosis II results in diploid cells
C: Sister chromatids separate during meiosis II
How many times does DNA replicate during meiosis?
A: Once during prophase I
B: Once before meiosis I
C: Twice, once before meiosis I and once before meiosis II
D: There is no replicaHon
E: Once during metaphase
B: Once before meiosis I
At what stage of meiosis do sister chromatids finally separate?
A: Anaphase I
B: Prophase II
C: Metaphase II
D: Anaphase II
E: Telophase II
D: Anaphase II
Which stage of meiosis is characterized by the separation of homologous chromosomes?
A: Prophase I
B: Metaphase I
C: Anaphase I
D: Telophase I
E: Anaphase II
C: Anaphase I
How does geneHc variaHon arise during meiosis?
A: Crossing over and independent assortment
B: DNA replicaHon
C: Synapsis
D: Telophase I
E: Cytokinesis
A: Crossing over and independent assortment
Which of the following does NOT occur during meiosis but occurs during mitosis?
A: Homologous chromosomes separate
B: Crossing over
C: Production of haploid cells
D: Synapsis of homologous chromosomes
E: Production of diploid cells
E: Producyion of diploid cells
In which phase of meiosis are tetrads aligned at the cell’s equator?
A: Prophase I
B: Prophase II
C: Metaphase I
D: Metaphase II
E: Anaphase I
C: Metaphase I
At which cell cycle phase cells are not actively preparing to divide?
A: G1 phase
B: G2 phase
C: M phase
D: S phase
E: G0 phase
E: G0 phase
What occurs during the G1 phase of the cell cycle?
A: DNA replication
B: Assembly of the mitotic spindle
C: Separation of sister chromatids
D: Cell growth and normal functions
E: Cell division
D: Cell growth and normal functions
What is the main function of cytokinesis in the cell cycle?
A: To replicate DNA
B: To divide the cytoplasm
C: To separate sister chromatids
D: To repair DNA damage
E: To initiate cell growth
B: To divide the cytoplasm
During which phase of mitosis do the sister chromatids separate and move to opposite
poles of the cell?
A: Prophase
B: Metaphase
C: Anaphase
D: Telophase
E: Cytokinesis
C: Anaphase
Which of the following statements about mutaHons is true?
A: Mutations are always harmful.
B: Mutations can be beneficial, harmful, or neutral.
C: Mutations only occur in non-coding regions of DNA.
D: All mutations are inherited.
E: Mutations always lead to cancer.
Mutations can be beneficial, harmful, or neutral.
During which phase of meiosis does crossing over occur, leading to genetic diversity?
A: Prophase I
B: Metaphase I
C: Anaphase I
D: Prophase II
E: Metaphase II
A: Prophase I
What structure forms during cytokinesis in animal cells to facilitate cell division?
A: Cell plate
B: Cleavage furrow
C: Spindle fibers
D: Centrioles
E: Chromatin
B: Cleavage furrow
Which phase of mitosis is characterized by the alignment of chromosomes at the cell’s
equatorial plane?
A: Prophase
B: Prometaphase
C: Metaphase
D: Anaphase
E: Telophase
C: Metaphase
Which type of mutation involves the insertion or deletion of nucleotides, shifting the
reading frame of the genetic message?
A: Point mutation
B: Silent mutation
C: Nonsense mutation
D: Missense mutation
E: Frameshift mutation
E: Frameshift mutation
