CBSE 2024 · Region 5 · Set 1 · Q18 · 2 marks
$\displaystyle 5^{\prime}-\mathrm{G}^{\downarrow} \mathrm{A} \mathrm{A} \mathrm{T} \mathrm{T} \mathrm{C}-3^{\prime}$ $\displaystyle 3^{\prime}-\mathrm{C} \mathrm{T} \mathrm{T} \mathrm{A} \mathrm{A}_{\uparrow} \mathrm{G}-5^{\prime}$(a)Name the restriction enzyme that recognises the given specific sequence of bases. What are such sequence of bases referred to as ?(b)What are the arrows in the given figure indicating ? Write the result obtained thereafter.
$\displaystyle 5^{\prime}-\mathrm{G}^{\downarrow} \mathrm{A} \mathrm{A} \mathrm{T} \mathrm{T} \mathrm{C}-3^{\prime}$ $\displaystyle 3^{\prime}-\mathrm{C} \mathrm{T} \mathrm{T} \mathrm{A} \mathrm{A}_{\uparrow} \mathrm{G}-5^{\prime}$
(a)
Name the restriction enzyme that recognises the given specific sequence of bases. What are such sequence of bases referred to as ?
(b)
What are the arrows in the given figure indicating ? Write the result obtained thereafter.
Marking-scheme solution
(a)
• Enzyme – EcoRI,
• Palindrome / palindromic nucleotide sequences.
(b)
• Indicates the site at which EcoRI makes a cut in the two strands of DNA /
restriction sites or recognition sites of EcoRI
• thereafter gives rise to “sticky ends.”
Molecular Basis of InheritanceDNA FingerprintingApplyvery_short_answermedium
More from Molecular Basis of Inheritance
- Explain how the addition of lactose in the medium regulates the switching on of the lac operon in bacteria.2025 · asked 3×
- The type of bond represented by the dotted line '-----' in a schematic polynucleotide chain is:2024 · asked 3×
- Which of the options has correct identification of 'P', 'Q' and 'R' in the illustration of 'Central Dogma'…2024 · asked 3×
- Study the diagram given below and answer the questions that follows: Identify the structure shown in the…2025 · asked 3×
- What is a genetic code? Why did scientists feel the need to propose a genetic code? Genetic code is said to…2026 · asked 3×
- Assertion: Primary transcripts in eukaryotes are subjected to splicing to remove the introns. Reason (R):…2024 · asked 3×
- Given below is a heterogeneous RNA formed during Eukaryotic transcription: How many introns and exons…2025 · asked 3×
- Consider the given data of a hypothetical small portion of mRNA that codes for a functional polypeptide chain…2024 · asked 3×
CBSE Class 12 Biology past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.