Mitosis and meiosis - Medicine Student Genetics Reproduction Cellular Biology
Descripción: Mitosis y Meiosis
Base de geneticaDescripción completa
Descripción completa
Descripción: Informe, universidad andres bello
laporan pratikum biologiDeskripsi lengkap
Descripción completa
trabajo practico n°6 biologia celularDescripción completa
biologiFull description
Full description
Deskripsi lengkap
Mitosis &MeiosisFull description
Mitosis & Meiosis Notes
Descripción completa
laporan pratikum biologiFull description
Perbedaan Mitosis Dan MeiosisFull description
mitosis o meiosisDescripción completa
pembelahan sel dibagi menjadi 2 yaitu pembelahan langsung dan pembelahan secara tidak langsung , yang dibahs pada file ini adalah pembelahan secara tidak langsung yaitu mitsi dan meiosis . p…Full description
genetikaFull description
Descripción completa
Search
Home
Saved
207 views
0
Sign In
Upload
RELATED TITLES
0
Mitosis and Meiosis Uploaded by fghvfhf
Top Charts
Books
Audiobooks
mitosis & meiosis
Save
Embed
Share
Print
Download
Magazines
News
Join
Dr. papanicolou
1
of 3
Biology the Cell Cycle Worksheet
158an Bradford Protein
Search document
Mitosis and meiosis
Documents
Sheet Music
Cells divide into two different ways to make new cells. Mitosis
Mitosis is used to produce daughter cells that are genetically identical to the parent c ells. The cell copies - o
- its chromosomes, and then splits the c opied chromosomes equally to make sure that each daughter cell h Meiosis
Meiosis is used to make special cells - sperm cells and egg cells - that have half the normal number of chrom
reduces the number from 23 pairs o f chromosomes to 23 single chromosomes. The cell copies its chromoso
then separates the 23 pairs to ensure that each daughter cell has only one copy of each chromosome. A sec that divides each daughter cell again to produce four daughter cells.
Mitosis and meiosis
Sign up to vote on this title
Useful
Not useful
Mitosis
Your body contains trillions of cells (thousands of millions). But you started life as a single cell - a fertilised e
Home
Saved
Top Charts
Books
Audiobooks
Magazines
News
Documents
Sheet Music
Upload
Sign In
Join
Search
Home
Saved
207 views
0
Sign In
Upload
RELATED TITLES
0
Mitosis and Meiosis Uploaded by fghvfhf
Top Charts
Books
Audiobooks
mitosis & meiosis
Save
Embed
Share
Print
Download
Magazines
News
Join
Dr. papanicolou
1
of 3
Biology the Cell Cycle Worksheet
158an Bradford Protein
Search document
Before mitosis, the chromosomes are copied. They then c oil up, and each chromosome looks like a letter
Documents
nucleus of the cell. The chromosomes now consist of two sister chromatids. Mitosis separates these chrom each new cell has a copy of every chromosome.
Sheet Music
A diagram of a cell ready for mitosis. The copied chromosomes consist of two chromatids joined at the cen
The process of mitosis involves a number of different stages. The following diagram sets out the stages, and events that occur in each stage.
You're Reading a Preview Unlock full access with a free trial.
Download With Free Trial
Sign up to vote on this title
Useful
Not useful
Home
Saved
Top Charts
Books
Audiobooks
Magazines
News
Documents
Sheet Music
Upload
Sign In
Join
Search
Home
Saved
0
207 views
Sign In
Upload
RELATED TITLES
0
Mitosis and Meiosis Uploaded by fghvfhf
Top Charts
Books
Audiobooks
mitosis & meiosis
Save
Embed
Share
Print
Download
Magazines
News
Join
Dr. papanicolou
1
of 3
Biology the Cell Cycle Worksheet
158an Bradford Protein
Search document
Meiosis
Documents
Sheet Music
Some simple organisms - such as bacteria - can reproduce by simply dividing into two new individua
organisms, including human beings, reproduce through sexual reproduction. New individuals are formed by together of two special cells: a sperm cell and an egg cell.
The cells in our bodies contain 23 pairs of chromosomes - giving us 46 chromosomes in total. Sperm
egg cells contain 23 single chromosomes, half the normal number, and are made by a special form of cell di called meiosis.
Meiosis separates the pairs of matching (or 'homologous') chromosomes, so that sperm ce lls and e
only one copy of each. That way, when an egg cell fuses with a sperm cell, the fertilized egg has a full set: th copies of every chromosome. Meiosis involves two cell divisions: Meiosis I and Meiosis II.
Meiosis I separates the matching - or 'homologous' - pairs of chromosomes. Meiosis II divides each chromosome into two copies (much like mitosis).
In Meiosis I, each daughter cell receives a mix of chromosomes from the two sets in the parent cell. In addit
chromosomes in each matching pair swap some ge netic material before they are parted in a process called over. These processes produce new combinations of genes in t he sperm cells and egg cells.
The following diagrams set out the main stages of Meiosis I and Meiosis II in males. (A similar process in fem produces egg cells rather than sperm cells.
You're Reading a Preview Unlock full access with a free trial.
