DNA Facts
What are the smallest units of DNA?
Nucleotides
Where in the cell cycle does DNA get replicated?
The S phase
What are the 4 types of mutations that we discussed?
Deletion, insertion, substitution, and duplication
How many pairs of chromosomes do humans have?
22 and an XX or XY pair
Why do we have checkpoints in the cell cycle?
To prevent errors in cell division
What do beneficial mutations do?
Help the organism thrive in their environment
What are the 3 components that make up nucleotides?
Nitrogenous base, sugar, phosphate group
A mutation in what type of gene might lead to cancer?
A tumor suppressor gene
Transcription