MEIOSIS
A process of nuclear division that reduces the number of chromosomes and new cells to half the number in the original cell.

PROPHASE I

• Synapsis- tetrads form
• Non-sister chromatids cross over
• Spindles form
• Nuclear membrane dissolves

Untitled Slide

METAPHASE I

• Tetrads are randomly aligned at the equator

ANAPHASE I

• Tetrads pull apart
• Independent assortment occurs

TELOPHASE I

• Nuclear membrane briefly reforms
• Two cells end as 1n

PROPHASE II

• Nuclear membrane dissolves
• Spindle formation

METAPHASE II

• Chromosomes line up at the equator

ANAPHASE II

• Tetrads pull apart
• Chromatids separate to opposite sides of the poles

TELOPHASE II

• Nuclear membrane reforms
• Helps create four unique 1n cells

THE FINAL PRODUCT

MORE INFO ON MEIOSIS

• Meiosis keeps the number of chromosomes from doubling each generation.
• Provides genetic diversity in offspring.

Presentation by: Julianne Young, Sydney Shillinglaw, and Matthew Hunter