LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

BIOTECHNOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which describes how DNA is used in biotechnology?
A
The genetic information contained in all living cells can be changed, removed, or added to make products and living organisms function better.
B
DNA is not used in biotechnology, only RNA is used.
C
Only the DNA in animal cells can be changed to improve products and living organisms.
D
Only the DNA in plant cells can be changed to improve products and living organisms.
Explanation: 

Detailed explanation-1: -Many forms of modern biotechnology rely on DNA technology. DNA technology is the sequencing, analysis, and cutting-and-pasting of DNA. Common forms of DNA technology include DNA sequencing, polymerase chain reaction, DNA cloning, and gel electrophoresis.

Detailed explanation-2: -Genetic information is carried in the linear sequence of nucleotides in DNA. Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs.

Detailed explanation-3: -Genetic engineering (also called genetic modification) is a process that uses laboratory-based technologies to alter the DNA makeup of an organism.

Detailed explanation-4: -Genetic engineering (or recombinant DNA technology) allows selected individual gene sequences to be transferred from an organism into another and also between nonrelated species.

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