Cell Cycle Quiz

What is the definition of a cell cycle?

What are the two main phases of the cell cycle?

What are the sub-phases of interphase?

G1 phase is considered the resting phase of the cell cycle.

What occurs during the S phase?

G2 phase follows the S phase and encompasses the resting stage after DNA replication.

What is the name given to the division of the nucleus?

What is the name given to the division of the cytoplasm?

What type of cell division is responsible for the development of a zygote into an adult organism?

Mitosis leads to the formation of new organs like roots, leaves, stems, and branches in plants.

Mitosis plays a role in repairing damaged parts in both plants and animals.

Mitosis helps overcome aging by replacing old, decayed, and dead cells.

How does mitosis contribute to the production of identical progeny in vegetatively propagated crops?

Mitosis is crucial for maintaining the purity of types in crops because it does not allow segregation and recombination.

Mitosis helps in the continuous replacement of old tissue with new ones in animals.

Who coined the term 'mitosis'?

Mitosis is also known as somatic cell division.

Which of the following characteristics do NOT apply to daughter cells produced by mitosis?

Cells in interphase are characterized by a deeply stained nucleus showing a definite number of nucleoli.

During interphase, chromosomes are individually distinguishable and appear as distinct coiled threads.

The cell is metabolically inactive during interphase.

Which of the following is NOT a stage of mitosis?

What happens to the nucleus during prophase?

What does the disintegration of the nuclear membrane signify?

During metaphase, where are the chromosomes arranged?

The chromosomes at metaphase are the shortest and thickest.

What is the name given to the orientation of centromeres at the equator?

What happens to the centromere of each chromosome during anaphase?

The chromosome number is reduced to half during anaphase.

What marks the beginning of telophase?

Cytokinesis typically occurs between late anaphase and the end of telophase.

In plant cells, cytokinesis occurs through the formation of a cell plate.

What is the process by which cytokinesis occurs in animal cells?

The term meiosis was coined by J.B. Farmer in 1905.

Meiosis is found in organisms that exhibit asexual reproduction.

What is the Greek word from which the term 'meiosis' is derived?

What are cells that undergo meiosis called?

Which of the following processes does NOT occur during meiosis?

The first meiotic division is also known as reduction division.

What is another name for the first meiotic division?

The second meiotic division is also known as homotypic division.

Meiosis ultimately results in the production of four haploid daughter cells.

In a tetrad produced by meiosis, all four daughter cells are genetically identical.

Meiosis typically begins following an interphase that is significantly different from the interphase preceding mitosis.

DNA duplication occurs during the S phase of the meiotic interphase.

Prophase I of meiosis is a short and simple stage.

What are the sub-stages of prophase I?

During leptonema, chromosomes appear as long, loosely interwoven threads, resembling a tangled yarn.

Bead-like structures called chromomeres can be found on chromosomes during zygonema.

Synteresis is the process by which homologous chromosomes pair during zygotene.

During pachytene, exchange of segments between non-sister chromatids of homologous chromosomes occurs, a process known as crossing over.

During diplotene, homologous chromosomes begin to separate, but they remain attached at certain points along their length, called chiasmata.

Terminalization of chiasmata occurs during diplotene.

During diakinesis, the nuclear membrane and nucleolus disappear.

Metaphase I is characterized by the alignment of tetrads at the equator of the cell.

During anaphase I, homologous chromosomes migrate to opposite poles of the cell.

Each chromosome at the end of anaphase I has two chromatids.

Telophase I is marked by the division of the cytoplasm into two daughter cells.

Prophase II of meiosis is similar to prophase of mitosis.

During anaphase II, sister chromatids separate and move to opposite poles.

Cytokinesis after meiosis II always results in the formation of four daughter cells.

Meiosis ensures that the chromosome number remains constant within a species.

Meiosis is responsible for producing gametes with a diploid chromosome number.

The fusion of male and female gametes results in the formation of a diploid zygote.

Meiosis facilitates both segregation and independent assortment of chromosomes and genes.

Crossing over is a process that occurs during meiosis.

Meiosis is essential for the continuity of sexually reproducing species.

Meiosis contributes to genetic variability within a population.

Meiosis is a key factor in evolution, allowing for the adaptation of species to changing environments.

Mitosis results in the production of daughter cells that are genetically identical to the parent cell.

Meiosis results in the production of daughter cells that are genetically distinct from the parent cell.

Mitosis is a key process in the development of an adult organism from a single fertilized egg (zygote).

Meiosis is essential for the repair of damaged tissues.

Mitosis contributes to the production of new organs in plants.

Meiosis is responsible for the continuous replacement of old cells with new ones in animals.

Meiosis is involved in the production of genetically identical daughter cells.

Mitosis is involved in the production of genetically distinct daughter cells.

Meiosis is a key process in the formation of gametes.

Mitosis is a key process in maintaining the genetic purity of vegetatively propagated crops.