Question

What is vector in biology.....

Answer 1

vector - it is a carrier DNA molecule to which the fragments of desired DNA are attached and carried to required site.

it many be a plasmid or cosmid DNA or bacteriophage DNA or DNA from plant and animal viruses or artificial DNA ,etc..

I hope it's helpful for you

Answer 2

✴ Vector:

It is an organism which harbours a pathogen and may pass it on to another body or person to cause a disease. The vectors are the source of indirect transmission of diseases where pathogens reach the human body through some intermediate agents I.e. an vector here.

✴ Examples:

✏ Common vectors are house flies, mosquitoes, cockroaches, worms etc.

• House flies carry the causative organisms of cholera in their legs and mouth parts from the faeces and sputum of infected person to food and drinks and contaminate them. When a healthy person consumes it, they are transmitted into his body.
• Similarly, Protozoan disease like Malaria is caused by Plasmodium which is carried by Mosquioes, more specifically female anopheles mosquito.
• Mosquioes like Aedes mosquito carry viruses of dengue and yellow fever to the host body.
• Filaria disease is transmitted by culex mosquitoes which carries the tiny worms Wucherai bancrofti $\large{\rm{.}}$

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