Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

If vector and insert ends are complementary, which enzyme will permanently join them?

Answer and explanation

Correct answer: DNA ligase

Complementary ends of a vector and an insert can first pair through complementary base pairing, which holds the two DNA molecules in the correct alignment. This pairing alone is not a permanent covalent connection. DNA ligase then seals the remaining discontinuities in the sugar-phosphate backbones by catalysing formation of phosphodiester bonds, producing a stable recombinant DNA molecule. Option A is therefore correct. A ribosome synthesises proteins, chlorophyll participates in light absorption during photosynthesis, and amylase hydrolyses starch; none of them joins DNA fragments. Complementary ends assist ligation, but the enzyme responsible for the permanent join is DNA ligase.

Related tags

Complementary EndsVector InsertDna LigaseLigase EnzymesPrinciples Of BiotechnologyBiotechnologyClass 11 Mcq

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.