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

Cos sites in a cosmid vector come from what?

Answer and explanation

Correct answer: Lambda phage

The direct answer is A: cos sites in a cosmid come from bacteriophage lambda. A cosmid is a plasmid-like cloning vector that carries the cos, or cohesive-end, sequences of lambda phage. These sequences are recognized during lambda-like packaging, which helps cosmids handle relatively large DNA inserts; after delivery, the cosmid behaves as a plasmid in a suitable host. Option A is correct because lambda phage supplies the cos sequences. Option B, chlorophyll, is a photosynthetic pigment and has no role in cosmid construction. Option C, starch, is a carbohydrate reserve and is not a vector sequence. Option D, hemoglobin, is an oxygen-carrying protein and is also unrelated. Do not confuse the cos site with the whole lambda genome: a cosmid usually combines lambda cos sequences with plasmid features. Memory cue: cosmid = cos from lambda plus plasmid.

Related tags

CosmidCos SitesLambda Phage

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.