MOLECULAR BASIS OF INHERITANCE – MP BOARD QUESTIONS & ANSWERS (Class 12)
VERY SHORT QUESTIONS (1 Mark)
1. Who gave the double helix model of DNA?
Answer: Watson and Crick.
2. What is the sugar present in DNA?
Answer: Deoxyribose.
3. Name the stop codons.
Answer: UAA, UAG, UGA.
4. What is the full form of HGP?
Answer: Human Genome Project.
5. What is the basic unit of DNA?
Answer: Nucleotide.
SHORT ANSWERS (2–3 Marks)
1. Define transcription.
Answer: The process by which mRNA is formed from a DNA template using RNA polymerase. It occurs
in the nucleus.
2. What is semi-conservative replication?
Answer: Each daughter DNA has one old (parental) strand and one newly synthesized strand.
3. Write two differences between DNA and RNA.
Answer:
DNA – double-stranded, contains thymine.
VERY SHORT QUESTIONS (1 Mark)
1. Who gave the double helix model of DNA?
Answer: Watson and Crick.
2. What is the sugar present in DNA?
Answer: Deoxyribose.
3. Name the stop codons.
Answer: UAA, UAG, UGA.
4. What is the full form of HGP?
Answer: Human Genome Project.
5. What is the basic unit of DNA?
Answer: Nucleotide.
SHORT ANSWERS (2–3 Marks)
1. Define transcription.
Answer: The process by which mRNA is formed from a DNA template using RNA polymerase. It occurs
in the nucleus.
2. What is semi-conservative replication?
Answer: Each daughter DNA has one old (parental) strand and one newly synthesized strand.
3. Write two differences between DNA and RNA.
Answer:
DNA – double-stranded, contains thymine.
