Meğer 300 milyon sperm yumurta finaline doğru 100 metre yarışı yapmıyormuş ve birinci gelen sperm döllenme hakkını kazanmıyormuş. En iyi, en uygun olan sperm yumurtaya girebiliyormuş. Onu da yumurta seçiyor.
Stockholm Üniversitesi ve Manchester Üniversitesi bünyesindeki araştırmacılar yumurtayı çevreleyen ve sperm hücrelerini çeken kimyasal maddeler içeren foliküler sıvının, her kadında farklı bir kimyasal imza taşıdığını keşfetmişler.
Bu çalışma, döllenmenin sadece en hızlı yüzen spermin yarışı kazandığı düz bir süreç olmadığını, yumurtanın aktif olarak sürece dahil olduğunu ve kendi tercihini yaptığını ortaya koymuş.
Bu seçilim mekanizmasının arkasındaki temel evrimsel mantık da genetik kaliteyi maksimize etmek.
Yumurta, kendi kimyasal sinyalleri sayesinde genetik olarak daha uyumlu veya daha yüksek kaliteli (DNA bütünlüğü daha iyi olan) spermleri "koklayarak" kendine çekmeye çalışıyormuş. Buna "kriptik seçilim" deniyor.
Yumurta hücresi biyokimyasal düzeyde ikinci bir oylama yapıyor. Bu, kadının seçtiği partnerin genetik profilinin yumurta için her zaman en iyi olmadığı durumları açıklıyormuş.
Nedeni açıklanamayan kısırlık vakalarının bir kısmının, yumurta ve sperm arasındaki bu kimyasal uyuşmazlıktan kaynaklanabileceğini düşünüyor bilim insanları.
This is wild
Here’s what happens when you wash your broccoli in plain water vs a vegetable wash that’s designed to remove the wax and pesticides buildup
This just shows how much chemicals we are all eating on our fruits and vegetables in America
Some wax is added to fruits and vegetables before being sold some is natural, but there’s also the pesticides and buildup from commercial agriculture
Just for reference commercial broccoli is often times sprayed 3 separate times with pesticides
Sugarcane juice isn't just a drink for me, it's one of my most painful memories.
When I was in 3rd standard, I was travelling with my mom. We had very little money that day. I asked her for a glass of sugarcane juice, and she said, I only have ₹10 left, and we need the rest for the ticket.
I said, It's okay, I don't want it.
But mothers have a way of putting their children before everything else. Even when they have almost nothing, they still find a way to give us something.
She bought me that glass anyway.
After finishing it, while leaving the shop, I accidentally dropped the glass and it broke. The shopkeeper asked for another ₹10 for the broken glass.
I still remember my mom apologizing and saying she didn't have any extra money.
I was just a child, but watching my mother helplessly explain that she couldn't afford ₹10 broke something inside me.
I cried that day.
Not because the glass broke.
Not because the shopkeeper was angry.
But because, for the first time, I understood what it means to not have enough money.
That day taught me the value of money, the sacrifices parents make, and the silent struggles they hide from their children.
That day, I made a promise to myself:
To earn enough so my mom would never have to think twice before spending money. To make sure she could travel without worrying about tickets, expenses, or whether we could afford something.
And today, whenever I buy a glass of sugarcane juice, that memory comes back.
A painful memory.
But also a reminder of how far we've come. ❤️
IMTIAZ ALI UNDERSTANDS GENZ BETTER THAN THE BOOMERS 🔥
SAURABH: Older generations say today’s youth no longer understand deep, lasting love.
IMTIAZ ALI 🎯: Every generation says that about the next one. Today’s youth are actually searching harder for meaningful, old-fashioned love.
SAURABH: Then why are they so lonely?
IMTIAZ ALI: Because reaching someone takes only one swipe. The journey begins afterwards, when they struggle to communicate what is truly in their hearts.