The human body is made up of many millions of cells containing genes. Genes hold the information about how the body should grow and develop. If you have had a virus, it can be detected in your genes.
In this week's 6 Minute English William and Helen talk about how some ancient viruses have survived in our genes.
This week's question:
How many genes do human beings have?
a) between 10,000 and 25,000
b) between 100,000 and 250,000
c) between 1 million and 2.5 million
Listen out for the answer at the end of the programme.
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molecules in our body which tell our bodies how they should grow and develop
small signs that something happened
- a virus
a very small creature that spreads infectious diseases
- an ancestor
a person or plant that is related to someone or something today but that lived earlier
- to evolve
to change and adapt slowly over a long time
- a micro-organism
a very small creature
- to thrive
to prosper, to develop or live well