Below Are the Steps Involved in Cloning Gene Sequences Using

question 98

Multiple Choice

Below are the steps involved in cloning gene sequences using mRNA. Arrange the steps in the appropriate order. 1. The double-stranded cDNA is treated with a restriction endonuclease to generate compatible ends for annealing and ligation.
2) mRNA is isolated from the cell and converted back into double-stranded sequences using reverse transcriptase to generate complementary DNA.
3) The RNA-DNA hybrid is treated with a nuclease to cleave the RNA strand, producing RNA fragments.
4) Reverse transcriptase completes the single-stranded cDNA when it reaches the 5 ^' end of the mRNA transcript.
5) RNA fragments serve as primers for DNA synthesis of the second strand of cDNA using DNA polymerase.

• A) 4, 2, 1, 5, 3
• B) 2, 4, 3, 5, 1
• C) 2, 3, 5, 4, 1
• D) 3, 2, 5, 4, 1

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Definitions:

Atmospheric Carbon Dioxide

A naturally occurring greenhouse gas in Earth's atmosphere, responsible for absorbing and emitting infrared radiation, significantly impacting the planet's climate.

Ground Tissue System

A plant tissue system composed of all tissues except the dermal tissue and vascular tissue, involved in photosynthesis, storage, and support.

Vascular Tissue System

A network of plant tissues (xylem and phloem) responsible for the transport of water, nutrients, and sugars throughout the plant.

Dermal Tissue System

The dermal tissue system in plants constitutes the outer protective covering and plays a key role in gas exchange and water absorption.