DNA: mutation, molecular clock, homology, genetic drift

What is a gene

• a section of DNA that codes for a trait

• a pair of pants that are made of denim

• the whole entire chromosome found in the nucleus

What is a genetic mutation

• the making of a zombie

• any change in the DNA base pairs

• the process of duplicating the DNA in a cell

A deletion mutation occurs when

• a base pair is missing from the DNA strand

• a base pair is added to the DNA strand

• a base pair is replaced with a different base pair

A mutation that helps an organism survive and reproduce

• harmful mutation

• helpful mutation

• neutral mutation

A mutation that decreases an organism's ability to survive and reproduce

• harmful mutation

• helpful mutation

• neutral mutation

A mutation that has NO effect on an organism's ability to survive and reproduce

• harmful mutation

• helpful mutation

• neutral mutation

A mutation in which a base pair is removed, and the code shifts over

• addition

• deletion

• substitution

• mutation

Who SHOULD have gotten credit for discovering the shape of DNA?

• Francis Crick

• James Watson

• Maurice Wilkins

• Rosalind Franklin

A mutation is always harmful.

• True

• False

A mutation can be...

• harmful

• helpful

• neutral

• harmful or helpful, but never neutral

• harmful, helpful, AND neutral