Science: Cell Division Part 2

Home

Get App

Take Quiz

Create

Reproductive process that produces 4 Haploid sex cells from 1 diploid body cell

Meiosis
What is produced in Meiosis?
- Sex Cells
- (sperm and egg)
Cells having 1/2 the # of Chromosomes as body cells

Haploid Cells
How are sex cells an example of Haploid Cells?

Sperm and egg only have 23 chromosomes (not in pairs)
The first cell of a new person?

Zygote
What are the 2 major steps of Meiosis?
- Meiosis 1
- Meiosis 2
What are the 5 steps of Meiosis 1?
- Interphase
- Prophase 1
- Metaphase 1
- Anaphase 1
- Telophase 1
What happens in Meiosis?

One 46 Chromosome breaks down into two 46 chromosomes which break down into two sets of 23 chromosomes each
Similar Chromosomes aligned next to each other

Prophase 1
Similar Chromosomes

Homologous chromosomes
What happens during Prophase 1

Crossing over occurs
What happens during crossing over?

Segments of DNA are exchanged
Homologous chromosomes line up in the middle of the cell

Metaphase 1
Homologous chromosomes split and move to opposite sides of the cell

Anaphase 1
Cell prepares to undergo cytoplasm division

Telophase 1
Steps of Meiosis 2?
(4)
- Prophase 2
- Metaphase 2
- Anaphase 2
- Telophase 2
What is the results of Meiosis 2?

4 Haploid Cells
What are the results of Mitosis?

2 Diploid cells
What are the results of Meiosis for males/females?
- Males:
- 4 Sperm Cells
- Females:
- 1 egg and 3 polar bodies
Mitosis vs. Meiosis:
MITOSIS:
(7)
- Mitosis:
- Produces body cells
- No crossing over
- Diploid cells
- 2 Indentical cells
- No homologous pairs
- 1 Divison
- Same # of chromosomes
Mitosis vs. Meiosis:
MEIOSIS:
(7)
- Produces sex cells
- Crossing over occurs
- Haploid cells
- 4 different cells
- homologous pairs
- 2 divisions
- 1/2 # of chromosomes
What are sex cells called?

Gametes

Author

LaurenCamp29

194274

Card Set

Science: Cell Division Part 2

Description

dfkdljsalfkj

Updated

2013-01-21T21:55:03Z