Which option is most correct for a cloning vector?Cloning vector के लिए कौन-सा विकल्प सबसे सही है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: It is a DNA vehicle for cloning a desired DNA segmentIt is a DNA vehicle for cloning a desired DNA segment
A cloning vector is a DNA molecule designed to carry a desired DNA segment into a suitable host cell, where the inserted segment can be maintained and copied. Common vector systems include plasmids, bacteriophage-derived vectors, cosmids, BACs, and some artificial chromosomes. A useful vector generally contains an origin of replication, a selectable marker, and one or more cloning sites; additional elements may be included for screening or expression. Therefore option A is correct because it states the vehicle function of the vector. A digestive enzyme is a protein catalyst, a plant pigment is a molecule such as chlorophyll, and a bone mineral is an inorganic material. None of those is a DNA cloning vehicle.Cloning vector एक ऐसा DNA अणु है जो desired DNA segment को उपयुक्त host कोशिका तक ले जाता है, जहाँ inserted segment सुरक्षित रहकर maintain और replicate हो सकता है। Plasmid, bacteriophage-derived vector, cosmid, BAC और कुछ artificial chromosomes इसके उदाहरण हैं। एक उपयोगी vector में सामान्यतः origin of replication, selectable marker और एक या अधिक cloning sites होते हैं; screening या expression के लिए अतिरिक्त sequences भी जोड़ी जा सकती हैं। इसलिए विकल्प A सही है, क्योंकि वह vector के मुख्य vehicle function को बताता है। Digestive enzyme एक catalytic protein, plant pigment chlorophyll जैसा अणु और bone mineral अकार्बनिक पदार्थ होता है। इनमें से कोई भी DNA cloning vehicle नहीं है।
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