Overland High School  Biology
Name ___________________________________
Period ___ Date ___/___/___
Chapter 11 The Cell Cycle
Meiosis Notes

Meiosis I
Meiosis occurs in __________ reproduction when a ________ germ cell produces ___ ___________
daughter cells that can mature to become ____________(_______ or _____).
Goal: ________ genetic material by ______
Why?
n (mom) + n (dad) = ___n (_____________)
Prophase I __________ prophase- Chromatids ________. ____________over occurs.
________ prophase- Chromosomes ___________. __________ forms. Nuclear
_____________fragments.
Early Prophase
Late Prophase
Metaphase I- Chromatid pairs _______ along the __________ of the cell.
Anaphase I- Chromosomes ____________and move to ___________ poles. Sister chromatids remain
_____________ at their _________________.
Telophase I- Nuclear envelopes ____________. __________ disappears. ____________ divides cell into ____.
Meiosis II
________ chromatids carry
____________ genetic information.
Meiosis II produces ____________ with ___copy of each _____________ and thus one copy of each______.
Prophase II- Nuclear envelope ______________. Spindle _________.
Metaphase II- Chromosomes _______ along __________ of cell.
Anaphase II- Sister ___________ separate and move to opposite _______.
Telophase II- Nuclear envelope _______________. Chromosomes _________. Spindle ____________.
________________ divides cell into ______.
Results of Meiosis
•
_____ _________ cells
•
One ______ of each chromosome
____________ allows the creation of ________ individuals through __________ reproduction.
Comparison of Mitosis & Meiosis
Mitosis
Meiosis
Number of divisions
Number of daughter cells
Genetically identical?
Chromosome #
Where
When
Role
MITOSIS
MEIOSIS
Occurs in ________(body) cells
Occurs only in ________
(sex organs: ________/_________)
Produces cells for_________,
maintenance, _________, asexual reproduction
Only produces ___________
(sex cells: ______/________)
Results in _________diploid (2n) daughter cells
Reduction division results in __________(n) cells