B2-Cell division
Chromosomes
The cell cycle
In body cells the chromosomes are normally found in pairs
The nucleus of a cell contains chromosomes made of DNA molecules
Each chromosome carries a large number of genes.
Stage 1
Stage 2 (Mitosis)
Stage 3
Importance of mitosis
Stem cells
Function of stem cells
in adults animals
in embryos
in the plant meristem
description of a stem cells
Embryonic stem cells
Bone marrow stem cells
Stem cells in plants
using stem cells to treat paralysis and diabetes
therapeutic cloning
can be used to produce clones of
plants quickly and economically
Rare species can be cloned to protect from extinction
Crop plants with special features such as disease resistance can
be cloned to produce large numbers of identical plants for farmers
Evaluate the practical risks
and benefits, as well as
social and ethical issues, of the use of stem cells in medical research and treatments
ethical/religious objections
method
risks with using stem cells