Cell Cycle And Cell Division Chapter-Wise Test 9

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following is incorrect about meiosis?

Meiosis occurs in germ cells
Meiosis reduces the chromosome number by half
Meiosis consists of one round of division
Meiosis contributes to genetic variation
3

Meiosis consists of two rounds of division (meiosis I and meiosis II), not just one.

Which of the following occurs during anaphase II of meiosis?

Homologous chromosomes separate
Sister chromatids separate
Synapsis occurs
Crossing over occurs
2

In anaphase II, sister chromatids separate, similar to anaphase of mitosis.

Which of the following statements about mitosis is incorrect?

Mitosis occurs in somatic cells
Mitosis results in two genetically identical daughter cells
Crossing over occurs in mitosis
Mitosis is essential for growth and repair
3

Crossing over does not occur in mitosis; it occurs during prophase I of meiosis.

Which of the following is incorrect about G2 phase?

It occurs before mitosis
Proteins necessary for mitosis are synthesized
DNA replication occurs in this phase
Cell continues to grow
3

DNA replication occurs in the S phase, not in G2.

Which of the following is incorrect about metaphase?

Chromosomes align at the metaphase plate
Spindle fibers attach to kinetochores
Sister chromatids separate during metaphase
Metaphase is an important stage for karyotyping
3

Sister chromatids do not separate in metaphase; they separate during anaphase.

Which event distinguishes meiosis I from mitosis?

Sister chromatids separate
DNA replication occurs
Homologous chromosomes pair and undergo recombination
Nuclear envelope dissolves
3

During meiosis I, homologous chromosomes pair up and undergo recombination, which does not occur in mitosis.

Which phase of meiosis involves the separation of sister chromatids?

Anaphase I
Telophase I
Anaphase II
Telophase II
3

During anaphase II, the sister chromatids of each chromosome separate and move toward opposite poles.

Which of the following is incorrect about prophase I of meiosis?

It is longer than prophase of mitosis
Crossing over occurs in pachytene
Homologous chromosomes pair during zygotene
Chromosomes do not condense in prophase I
4

Chromosomes condense during prophase I of meiosis.

What is the main feature of metaphase I of meiosis?

Chromosomes align at the equator as bivalents
Chromatids separate and move to opposite poles
Synapsis occurs between homologous chromosomes
Homologous chromosomes pair up
1

In metaphase I, bivalents (paired homologous chromosomes) align at the metaphase plate.

What is the function of spindle fibers during cell division?

Replicate DNA
Condense chromosomes
Separate chromatids or homologous chromosomes
Form the nuclear membrane
3

Spindle fibers attach to kinetochores and help in the movement and separation of chromatids or homologous chromosomes during cell division.

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