Meiosis & Sexual Reproduction

What is meiosis?

• The process by which germ cells divide to form gametes.

• A type of cell division that results in two identical daughter cells.

• The process of DNA replication before cell division.

• A method of asexual reproduction in unicellular organisms.

What is crossing over?

• The exchange of genetic material between homologous chromosomes during meiosis.

• The process of DNA replication before cell division.

• The separation of sister chromatids during mitosis.

• The fusion of two gametes to form a zygote.

What is the significance of genetic variation in meiosis?

• It increases diversity in a population through processes like crossing over and independent assortment.

• It decreases the chances of mutations occurring in the DNA.

• It ensures that all offspring are genetically identical to the parent.

• It eliminates harmful genes from the population.

What is the main purpose of meiosis?

• To produce diploid cells for asexual reproduction.

• To produce haploid gametes for sexual reproduction.

• To repair damaged DNA in somatic cells.

• To facilitate the growth of tissues in multicellular organisms.

What is independent assortment?

• The process of DNA replication before cell division.

• The random distribution of homologous chromosomes during meiosis.

• The fusion of gametes during fertilization.

• The separation of sister chromatids during mitosis.

What is a diploid cell?

• A cell that contains one complete set of chromosomes from one parent.

• A cell that contains two complete sets of chromosomes, one from each parent.

• A cell that contains three complete sets of chromosomes from each parent.

• A cell that contains only one chromosome from each parent.

What happens during anaphase I of meiosis?

• Homologous chromosomes are pulled apart to opposite poles of the cell.

• Sister chromatids are separated to opposite poles of the cell.

• Chromosomes are replicated to form sister chromatids.

• Homologous chromosomes align at the cell's equator.

What are gametes?

• Reproductive cells (sperm and eggs) that contain half the number of chromosomes.

• Cells that make up the skin and hair.

• Cells that are involved in the immune response.

• Cells that transport oxygen in the blood.

What is the role of the spindle fibers in meiosis?

• To help separate chromosomes during cell division.

• To synthesize DNA during replication.

• To provide energy for the cell division process.

• To transport nutrients to the dividing cells.

What is fertilization?

• The process where a sperm cell and an egg cell combine to form a zygote.

• The process of a plant growing from a seed.

• The method by which animals reproduce asexually.

• The stage of development after a zygote has formed.