NEET-UG Biology · Class 11
Meiosis I and the substages of prophase I — NEET & JEE Questions
Meiosis I and the substages of prophase I is a topic in Cell Cycle and Cell Division, a Class 11 Biology chapter of the NEET-UG syllabus. TestBudy holds 12 published NEET-UG questions on Meiosis I and the substages of prophase I, each with the marking scheme of the real paper.
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Meiosis I and the substages of prophase I MCQs with solutions
10 of the 12 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
In which substage of prophase I does synapsis of homologous chromosomes occur?
- A. Leptotene
- B. Zygotene
- C. Pachytene
- D. Diplotene
Meiosis I is called a reductional division because
- A. homologous chromosomes separate, reducing chromosome number by half
- B. sister chromatids separate first
- C. DNA replication occurs twice
- D. chromosome number doubles
Synapsis of homologous chromosomes occurs during which prophase I substage?
- A. Zygotene
- B. Leptotene
- C. Diplotene
- D. Diakinesis
Crossing over between non-sister chromatids occurs mainly during
- A. Pachytene
- B. Leptotene
- C. Zygotene
- D. Telophase I
A meiotic cell shows homologous chromosomes paired as bivalents, and crossing over is occurring between non-sister chromatids. Which prophase I substage is most consistent with this observation?
- A. Zygotene
- B. Pachytene
- C. Diplotene
- D. Diakinesis
Visible chiasmata are especially characteristic of
- A. Diplotene
- B. Leptotene
- C. Metaphase I
- D. Telophase II
Terminalisation of chiasmata and maximal chromosome condensation are associated mainly with
- A. Diakinesis
- B. Zygotene
- C. Pachytene
- D. Interphase
At metaphase I, chromosomes are arranged as
- A. homologous pairs or bivalents at the equator
- B. single chromatids at the equator
- C. unpaired homologues at opposite poles
- D. decondensed chromatin
A cell shows paired homologous chromosomes connected by a synaptonemal complex but no completed crossing-over sites yet. Which stage is most consistent?
- A. Zygotene
- B. Diplotene
- C. Diakinesis
- D. Anaphase I
A meiotic cell shows homologues beginning to separate while remaining connected at chiasmata. Which stage is it in?
- A. Diplotene
- B. Pachytene
- C. Leptotene
- D. Metaphase II
Common mistakes in Meiosis I and the substages of prophase I
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Remembering the names of the substages but reversing the order of synapsis, crossing over and chiasma visibility.
- Swaps synapsis, crossing-over and chiasma stages.
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