Cell Division-Mitosis and Meiosis: Part 4: Meiosis

Question 1

What stages is Meiosis divided into?

Answer 1

Meiosis I and Meiosis II

Question 2

What is another name for Meiosis I?

Answer 2

Reduction Division

Question 3

What happens in Meiosis I?

Answer 3

1. Synapsis and Crossing over occurs. During synapsis, chromosomes pair up precisely with their homologue so that crossing over can occur. Crossing over is the process homologous chromatids exchange genetic material. Crossing over is important because it ensures greater variety in the gametes.
   2.Homologous chromosomes separate.
   3.Chromosomes line up randomly in the equatorial plate and separate independently. That means that how one chromosome lines up and separates has no effect on how another one does.
2. Each resulting gamete is genetically unique.
   Double file

Question 4

What happens in Meiosis II?

Answer 4

1. Sister chromatids separate.
2. The division maintains the haploid number of chromosomes.
3. This phase maintains the goal of meiosis- producing four genetically unique from one original mother cell.
   single file