Hint: Lots of these molecules join to form a double helix shape to form a gene
Hint: Two individuals which are genetically different will also look different
Hint: Physical characteristics that are measured on a continuous scale can be any value between the minimum and maximum values for that characteristic
Hint: This is a key process through which species change their physical characteristics.
Hint: How often does an individual pass on its genetic information
Hint: Charles Darwin was on board HMS Beagle when he visited the Galapagos
Hint: Charles Darwin's book 'On the Origin of Species by Means of Natural Selection' is based on this theory