genetically identical cells

same genes as parents

clones

no variation in off spring

2 identical halves

splits down middle

membrane forms round each

DNA replicates itself

eggs

sperm

humans

egg & sperm fuse

full number of chromosomes

both parents

mixture of chromosomes

genetic variation

growth medium

hormones

many plants

quickly

not much space

grow all year

sperm cell

egg cell

clone

clone embryos into other cows

baby calves all genetically identical

100s of ideal off spring every year

reduced gene pool

stem cells

treat diseases form stem cells

replacement organs

unethical?

adult cell - fused - embryonic stem cell

properties of stem cell

genes of adult cell