Cell cycle Flashcards
Cell cycle
Grow, duplicate DNA, grow, divide, repeat
Individual life
is a finite cycle with the posibbility of reproduction
Chromosomes
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes.
2 pairs of 23, total 46
Chromosomes numbered from:
Larger to smaller
Homologs
2 pairs of cromosomes
one comes from dad and the other one comes from mom
Diploid cell
2 sets of chromosomes
Chromosomes applies in…
Body cells, except gamets
Chromosomes organized or disorganized
During interphase they are disorganized.
Just organize when the division process occur
Cell cycle occur ___ times during your whole life
This process is repeated 10 to the 16 power during your whole life
Interphase
- The cell spends most of the time in interphase
* The cell grows and prepares for división
G1 interphase
- The first part of the commitment to divide
- Accomulation of molecular changes and growing
- Materials inside the cells may be duplicated, except DNA
S interphase
- Each chromosome is duplicated to form a new sister chromatid
- In this phase, the total amount of genetic material duplicates
G2 interphase
- Last synthesis of proteins needed for división
* Some growth is necessary
Table
estudiarla