Cell Division in Gamete Cells
description
Transcript of Cell Division in Gamete Cells
![Page 1: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/1.jpg)
Cell Division in Gamete Cells
MEIOSIS
![Page 2: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/2.jpg)
Variation
If the cell cycle produces only exact copies, then how is their variation (variety, differences) among living things? Why is it that you look different from your parents and different from the other students in the room?
ANSWER: Meiosis and Crossing Over in Homologous Chromosomes
![Page 3: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/3.jpg)
Homologous Chromosomes
Are corresponding chromosomes from the opposite-sex parent
![Page 4: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/4.jpg)
Crossing OverA process occurring during meiosis wherein two
chromosomes pair up and exchange segments of their genetic material.
Ii important because it results in new combinations of genes that are different from either parent, contributing to genetic variation and diversity.
![Page 5: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/5.jpg)
Crossing Over
![Page 6: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/6.jpg)
Meiosis
Similar to mitosis in some ways but different in other ways.
In meiosis there are two different stages called:
Meiosis I Meiosis II
![Page 7: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/7.jpg)
Meiosis I
![Page 8: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/8.jpg)
Meiosis II
![Page 9: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/9.jpg)
Meiosis
Meiosis produces four cells.
4 Haploid Gamete Cells
![Page 10: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/10.jpg)
Meiosis and Egg Cells: OOGENESIS
![Page 11: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/11.jpg)
Meiosis & Sperms Cells: SPERMATOGENESIS
![Page 12: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/12.jpg)
![Page 13: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/13.jpg)
A Comparison
MITOSIS & MEIOSIS
![Page 14: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/14.jpg)
Cell Division
Mitosis Meiosis
Purpose Growth & Repair
Reproduction
Divisions 1 2
Parent Cell Diploid Diploid
Daughter Cells
2 diploids 4 haploids
Cell Type Somatic Gamete
![Page 15: Cell Division in Gamete Cells](https://reader036.fdocuments.in/reader036/viewer/2022062302/56816597550346895dd86f83/html5/thumbnails/15.jpg)