Meiosis and Mitosis

Front

What is the S phase of the cell cycle?

Back

The S phase (Synthesis phase) is the part of the cell cycle where DNA is replicated, resulting in two identical sets of chromosomes.

Front

What occurs during mitosis?

Back

Mitosis is the process of cell division that results in two genetically identical daughter cells, each with the same number of chromosomes as the parent cell.

Front

How many chromosomes do human body cells have?

Back

Human body cells have 46 chromosomes.

Front

What is meiosis?

Back

Meiosis is a type of cell division that reduces the chromosome number by half, producing four gametes, each with 23 chromosomes.

Front

What is the role of spindle fibers during mitosis?

Back

Spindle fibers help separate the chromosomes during mitosis, ensuring that each daughter cell receives an identical set of chromosomes.

Front

What is an oncogene?

Back

An oncogene is a mutated form of a gene that has the potential to cause cancer by promoting unregulated cell division.

Front

What is the difference between benign and malignant tumors?

Back

Benign tumors are non-cancerous and do not spread to other parts of the body, while malignant tumors are cancerous and can invade nearby tissues and spread.

Front

What happens during anaphase of mitosis?

Back

During anaphase, the sister chromatids are pulled apart by spindle fibers and move toward opposite poles of the cell.

Front

What is the significance of meiosis in sexual reproduction?

Back

Meiosis produces gametes (sperm and eggs) with half the number of chromosomes, ensuring genetic diversity and proper chromosome number in offspring.

Front

What is the G1 phase of the cell cycle?

Back

The G1 phase (Gap 1 phase) is the first stage of interphase where the cell grows and prepares for DNA replication.