Biology - 13.3 - Mutations (2)

Guanine forms hydrogen bonds with which base?

• Adenine
• Guanine
• Cytosine
• Thymine

Which enzyme unzips the DNA to prepare for replication?

• Helicase
• DNA Polymerase
• Ligase
• Primase

A process in which DNA makes a copy of itself is called...

• Replication
• Translation
• Transcription
• Copying

Nitrogenous bases are joined by which type of bond?

• Polar bonds
• Ionic bonds
• Covalent bonds
• Hydrogen bonds

In what phase of the cell cycle does DNA replication take place?

• G1 phase
• S phase
• G2 phase
• M phase

Which of the following identifies the type of chromosomal mutation that has occurred on chromosome 18?

• Inversion
• Duplication
• Translocation
• Deletion

What type of chromosomal mutation has occurred?

• Substitution
• Insertion
• Deletion
• Nondisjunction

What type of chromosomal mutation has occurred?

• Inversion
• Duplication
• Deletion
• Translocation

Original Gene sequence: ABCDEF
Mutated Gene sequence: ABFEDC
What form of chromosomal mutation occurred?

• Deletion
• Substitution
• Inversion
• Translocation

When DNA is wrapped around _____, the structure that is formed is called a _____. 

• phosphate groups, centromere
• chromosomes, centromere
• histone proteins, nucleosome
• histone proteins, chromosome