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NEET Biology: Cell Cycle and Cell Division Important Notes

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NEET Biology: Cell Cycle and Cell Division Important Notes

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Questions and Answers

During which phase of the cell cycle does DNA replication take place?

S phase (correct)

M phase

G1 phase

G2 phase

What is the term for the phase where actual cell division occurs?

M phase (correct)

S phase

G2 phase

G1 phase

Which type of cell division is also known as equational division?

Meiosis I

Binary fission

Mitosis (correct)

Meiosis II

What is the time lapse between two successive M phases of cell division known as?

Interphase (D) Signup and view all the answers

What is essential for growth, repair, and reproduction in cells?

M Phase (D) Signup and view all the answers

During which stage of meiosis do homologous chromosomes get attached to the spindles from opposite poles?

Prophase I (A) Signup and view all the answers

What is the result of cytokinesis in meiosis I?

Formation of dyad cells (C) Signup and view all the answers

In which organisms does cytokinesis not immediately follow karyokinesis, leading to the formation of a multinucleate stage?

Fungi, algae, and plant cells (D) Signup and view all the answers

What happens during telophase II of meiosis?

Nuclear envelope reappears (B) Signup and view all the answers

What is the outcome of meiosis II?

Formation of haploid cells (B) Signup and view all the answers

Study Notes

Cell Cycle and Division

DNA replication takes place during the S phase of the cell cycle.
The phase where actual cell division occurs is called M phase (mitosis).
Mitosis is also known as equational division.
The time lapse between two successive M phases of cell division is known as the interphase.
DNA replication is essential for growth, repair, and reproduction in cells.

Meiosis

During metaphase I of meiosis, homologous chromosomes get attached to the spindles from opposite poles.
The result of cytokinesis in meiosis I is two daughter cells, each with the diploid number of chromosomes.
In some organisms, such as certain fungi and slime molds, cytokinesis does not immediately follow karyokinesis, leading to the formation of a multinucleate stage.
During telophase II of meiosis, nuclear envelopes reform, and chromosomes uncoil to form chromatin.
The outcome of meiosis II is four haploid daughter cells, each with unique combinations of alleles.

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Description

Access important notes for the NEET Biology chapter 'Cell Cycle and Cell Division' to assist with last-minute revision. These notes cover essential topics and concepts relevant to the NEET exam, offering valuable support for aspirants preparing for NEET and other similar examinations.