What if the real “biological clock” isn’t ticking in the womb… but in the testes? 🧬
A new Nature (2025) study — “Sperm sequencing reveals extensive positive selection in the male germline” — has turned our understanding of fatherhood and genetics upside down.
Inside every man’s testes, a microscopic Darwinian struggle is taking place: certain sperm stem cells mutate and outcompete others, multiplying as men age — and quietly spreading harmful mutations.
🎙️ In this episode, we unpack:
How sperm stem cells protect — yet betray — our DNA.
The “selfish” evolution within the germline.
Why older fathers face 2–3× higher mutation risk.
And how this process is subtly reshaping the human gene pool.
👉 Tune in to explore the hidden biological clock of fathers — and what it means for our future.
📚 Source: Sperm sequencing reveals extensive positive selection in the male germline. Nature, 2025.
#Genetics #SciencePodcast #DNA #Nature #Evolution #Fatherhood #PaternalAge #Genomics #ScienceExplained 🧬