Science 5 Seeing Double

Science 5 Seeing Double

pgs 50 and 51

Multiple Choice

Twins occur when a mother gives birth to two babies ...

• from the same pregnancy.

• from different pregnancies.

Multiple Choice

Identical twins occur when ...

• a single egg is fertilized and then divides into two embryos.

• two different eggs are fertilized.

Multiple Choice

Identical twins develop differences as they grow old ...

• because their genes change.

• because the environment and their life experiences influence them.