Chromosomes And Mitsosis Flashcards
Chromosomes contain…
Genetic info
Chromosmes
Coiled up lengths of dna molecules .
Each chromosomes carries a large number of genes. Different genes control thr development of different characteristics (eg hair colour).
In a human cell how many chromosomes are there?
23 pairs of chromosomes
The cell cycle makes new cells for…
Growth, development, repair
The stage of the cell cycle when the cell divides is called
Mitosis
Cell cycle
Body cells in multicellular organisms divide to produce new cells as part of a series of stages
What happens at the end of the cell cycle
Two new cells identical to the original cell with the same number of chromosomes
Two main stages of the cell cycle
Growth and dna replication
Mitosis
Functions of mitosis
Essentail for grwoth and developemnt of multicellular organisms (plants and animal’s)
Happens during asexual reproduction
Takes place when an organism repairs itself (eg: when a broken bone heals)
Mitosis..l
Copies one cell into two