In Meiosis I, a diploid cell undergoes DNA replication followed by chromosome separation
The end result of meiosis is four genetically identical haploid cells.
False
What happens to chromosomes during Prophase I of meiosis?
They condense
What type of cell division produces gametes with half the original number of chromosomes?
Meiosis
Order the steps of Meiosis II:
1️⃣ Prophase II
2️⃣ Metaphase II
3️⃣ Anaphase II
4️⃣ Telophase II and Cytokinesis II
Crossing over during Prophase I creates genetic diversity in the resulting gametes.
True
What is the exchange of genetic material between homologous chromosomes called?
Crossing over
What is the ploidy of cells produced after Meiosis I?
Haploid
Homologous chromosomes pair up to form bivalents during Prophase I.
True
During Metaphase I, spindle fibers attach to the kinetochores of homologous chromosomes
In Anaphase I, sister chromatids separate and move to opposite poles.
False
Order the stages of Meiosis I:
1️⃣ Prophase I
2️⃣ Metaphase I
3️⃣ Anaphase I
4️⃣ Telophase I and Cytokinesis I
Homologous chromosomes separate in Anaphase I, while sister chromatids separate in Anaphase of mitosis.
True
The key difference between Anaphase I and mitotic Anaphase is that in Anaphase I, homologous chromosomes separate, whereas in mitotic Anaphase, sister chromatids separate
Meiosis reduces the chromosome number from diploid to haploid.
True
How many daughter cells are produced at the end of meiosis?
Four haploid
Key events during Prophase I of meiosis
1️⃣ Chromosome condensation
2️⃣ Homologous chromosome pairing
3️⃣ Crossing over
4️⃣ Spindle formation
In Prophase I, the mitotic spindle apparatus begins to form
Match the phase of meiosis I with its key event:
Metaphase I ↔️ Homologous chromosomes align at the equator
Anaphase I ↔️ Homologous chromosomes separate
Telophase I ↔️ Nuclear envelopes reform
What two processes occur during Telophase I?
Nuclear envelope reforms and Cytokinesis I
What happens to the nuclear envelope during Prophase II?
It breaks down
Crossing over occurs during Prophase II.
False
Crossing over occurs in Prophase II.
False
In Metaphase II, spindle fibers attach to sister chromatids.
False
Match the process with its description:
Meiosis ↔️ Produces haploid gametes
Mitosis ↔️ Maintains diploid chromosome number
Meiosis results in four genetically identical haploid cells.
False
Arrange the events of Prophase I in the correct order:
1️⃣ Chromosome condensation
2️⃣ Homologous chromosome pairing
3️⃣ Crossing over
4️⃣ Spindle formation
In Metaphase I, sister chromatids align at the equator.
False
In Telophase I, the nuclear envelopes reform around the separated homologous chromosomes
In Anaphase I of meiosis, homologous chromosomes separate.
True
Cytokinesis I forms two haploid daughter cells.
True
Homologous chromosomes pair up in Prophase II.
False
In Metaphase II, homologous pairs align at the cell equator.
False
Anaphase II results in four genetically unique haploid daughter cells.
True
In Telophase II, the nuclear envelopes reform around haploid chromosomes.
In Telophase II, the nuclear envelopes reform around the separated sister chromatids
Around what type of chromosomes do nuclear envelopes reform in Telophase II?
Haploid
The key difference between meiosis and mitosis is that Telophase II and Cytokinesis II produce four haploid cells, while mitosis produces two diploid cells.
True
Match the feature with the type of cell division:
Meiosis ↔️ Produces gametes
Mitosis ↔️ Maintains diploid chromosome number
Crossing over ↔️ Increases genetic diversity
Single division ↔️ Occurs in mitosis
Meiosis reduces the chromosome number from diploid to haploid.