Hidden RNA aging clock found in human sperm (English, Level A1)

Scientists found a hidden RNA clock in sperm.
Older fathers have higher risks for children.
Sperm carry many different RNA molecules.
Researchers used a new sequencing method.
The change appears in mice and humans.
In mice there was a sharp age change.
Some sperm RNAs grow longer with age.
Adding old RNA changed early embryo cells.
Scientists hope to find ways to help sperm.
The finding was confirmed in human sperm samples.

Difficult words

scientist — people who study nature and do experiments

Scientists

sperm — male reproductive cells that can make babies

molecule — a very small part of a substance

molecules

sequence — to find the order of parts in something

sequencing

embryo — an early stage of a baby before birth

confirm — to show that something is true

confirmed

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Hidden RNA aging clock found in human sperm^{CEFR A1}

Difficult words

Discussion questions

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Hidden RNA aging clock found in human sperm CEFR A1

Difficult words

Discussion questions

Related articles

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Hidden RNA aging clock found in human sperm^{CEFR A1}