Genetics Quiz

What is the first step of DNA replication?

• Transcription

• Translation

• Unwinding of the DNA helix

• Formation of mRNA

During transcription, what does mRNA do?

• Copies DNA into RNA

• Translates RNA into proteins

• Replicates DNA

• Repairs damaged DNA

What is the process of translating mRNA into a protein called?

• Transcription

• Translation

• Replication

• Mutation

Which genetic disorder is caused by an extra chromosome 21?

• Turner Syndrome

• Klinefelter Syndrome

• Down Syndrome

• Cystic Fibrosis

What type of gene mutation occurs when a single nucleotide is changed?

• Frameshift mutation

• Point mutation

• Deletion mutation

• Duplication mutation

In forensic DNA analysis, what is the purpose of DNA fingerprinting?

• To create a physical representation of a person's finger

• To identify individuals based on their unique DNA sequences

• To determine a person's ancestry

• To diagnose genetic disorders

Which enzyme is responsible for adding nucleotides to a growing DNA strand during replication?

• Helicase

• DNA polymerase

• RNA polymerase

• Ligase

What is the role of tRNA during translation?

• To carry amino acids to the ribosome

• To copy DNA into RNA

• To replicate DNA

• To unwind the DNA helix

Which of the following is NOT a step in protein synthesis?

• Transcription

• Translation

• Replication

• Modification

What is a frameshift mutation?

• A mutation that changes a single nucleotide

• A mutation that removes one or more nucleotides

• A mutation that adds or deletes nucleotides, altering the reading frame

• A mutation that duplicates a section of DNA