What liquid is tested during amniocentesis?
Blood.
Amniotic fluid.
Urine.
A random change in the structure or number of chromosomes or genes is know as a ...?
Mutation
Disease
Condition
Which of the following can trigger skin cancer?
Smoking
Ultraviolet light
Excess alcohol
How many chromosomes does an individual with Down's syndrome have?
45
46
47
Which organisms can be genetically modified?
Plants only.
Animals only.
Plants and animals.