Question
Which of the following types of information are needed to construct a karyotype?
I. Size of the chromosomes
II. Gene mutations of the chromosomes
III. Age of the individual
A. I only
B. II only
C. I and II only
D. I, II and III
Answer/Explanation
Markscheme
A
Question
Which process is used in polymerase chain reaction (PCR)?
A. Transcription
B. Translation
C. Replication
D. Mutation
Answer/Explanation
Markscheme
C
Question
The flow chart summarizes methods of gene transfer.
Which enzymes are used in steps I and II?
Answer/Explanation
Markscheme
B
Question
A strand of DNA containing four codons with base sequence ACT GTA CTC TAC mutates, changing the base sequence to ACT ATG CTC TAC. What type of mutation has occurred?
A. Insertion
B. Substitution
C. Deletion
D. Degeneracy
▶️Answer/Explanation
B