How the Amazon molly stays genetically healthy (English, Level A1)

The Amazon molly is an all-female fish.
It reproduces by cloning itself and has no males.
Cloning often causes genetic problems in animals.
Scientists at a university studied the fish.
The fish has lived for a very long time.
Researchers found the fish DNA looked healthy.
A natural process helps fix bad genes in DNA.
This process reduces harmful changes and keeps health.
The finding may help future animal and plant research.

Difficult words

cloning — making an animal with the same genes

reproduce — have babies or make young animals

reproduces

genetic — about genes and inherited traits

gene — part of DNA that gives traits

genes

process — a series of natural steps or actions

scientist — a person who studies nature and facts

Scientists

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How the Amazon molly stays genetically healthy^{CEFR A1}

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