How are species related?

Question 1

What is DNA sequencing?

Answer 1

The process of determining the precise order of nucleotides in a segment of DNA.

Question 2

What is relatedness?

Answer 2

Relatedness refers to how recently species split from a common ancestor.

Question 3

What similarities would species show if they were related by evolution?

Answer 3

• similar biochemical composition
• similar genetic composition
• a greater degree of similarity should be evident in species that are closely related by common ancestor more recently than species that are more distantly related