Father VS Daughter DNA

Spoiler: she got my dry earwax, my lactose intolerance, and my busted drug-metabolism gene. She also got a better stress response than me, which, honestly, tracks. 😂

So you know those ancestry pie charts that say “67% Nigerian, 4% Scottish” and you just stare like… okay, but what does that mean? I’ve been deep in the genetic rabbit hole for a minute, spreadsheets, twenty-plus calculators, ancient DNA matching, all of it. And eventually I thought: forget percentages. Let me line up my actual raw DNA next to my daughter’s. A’s, T’s, G’s, C’s. Position by position.

We had 537,429 spots where both our files overlapped. Here’s what they said.

The Big Numbers 📊

• 68.1% identical, same letters, dead on.
• 31.7% half-match, she got one of mine, one from her mom.
• 0.2% no match, basically nothing, well within normal.

Now you’ve heard parent and kid “share 50%.” So why’s she 68% me? I didn’t clone myself, lol. The 50% is what you randomly inherit. But me and her are both heavy West African, and folks from the same population already share a ton of common variants before inheritance even kicks in. 68% is exactly what you’d expect. Every chromosome landed between 65–73%, that even spread is the fingerprint of a real parent-child match.

What Made It to Her 🌍

🏝️ The Malagasy Thread, Fully Passed

My genome’s always shown an Austronesian signal, most likely Malagasy (Madagascar got settled by seafarers from Southeast Asia, and that ancestry rode the Indian Ocean and slave trade into the Atlantic world). Two markers prove it: ABCC11, the earwax gene, I’m CC (dry earwax), she’s CC. And EDAR, the thick-hair gene, I’m AA, she’s AA. Both inherited clean. Real ancestry leaves real letters, and they get passed down. 🌊

🏴󠁧󠁢󠁳󠁣󠁴󠁿 European Pigmentation, All Three, Identical

My British Isles line shows up around 15–18%. The blue-eye variant (HERC2/OCA2), and both major light-skin genes (SLC24A5, SLC45A2)? She’s got all three, same as me. 👁️

🪶 Nanticoke / Native, Passed On

My Nanticoke line is small (1–2%) but real. Two Native-enriched markers (TYR, KCNQ1) made it to her too. A little piece of Algonquian Delaware, still readable in 2026.

🌍 The African One That Didn’t Make It

This is the part that got me. The Duffy-null allele (DARC/ACKR1) is one of the strongest West African markers, malaria resistance, near-universal in West African populations, forged over thousands of years. I carry one copy. She came back with none. I passed her a T, her mom passed a T. That ancient piece of survival code that rode through slavery, Reconstruction, the whole twentieth century… stops in my branch. Every kid is a fresh shuffle. Some things carry forward, some don’t. I didn’t expect that one to hit me as hard as it did. 🧬

The Health Stuff 💊

• FTO (weight/metabolism): I’m AA (highest risk). She got AT, her mom handed her a protective T. She drew better than me. Good for her. 🎉
• Type 2 diabetes (TCF7L2): same as me. Plus we share KCNQ1. So same risk profile, not a sentence, just a reason to stay active and watch the sugar.
• Lactose: both GG. We’re both lactose intolerant. Milk is a questionable life choice for us. 🥛❌
• Vitamin D: both TT, we should both actually be supplementing. Not a trend, a real one.
• The brain: she’s wired better in a couple spots, COMT and OXTR both GG, meaning better under pressure and built for empathy. And she’s got one APOE ε2 (Alzheimer’s-protective) from her mom that I didn’t have to give. Glad she’s got it. 🧡
• Athletics (ACTN3): we’re both XX, endurance people. Long distances, long games, long arguments neither of us backs down from. 🏃

Should You Try It?

If you and a relative both have raw files (AncestryDNA, 23andMe, MyHeritage), you can run this. Go in curious, not anxious, most of it’s interesting, not scary, and the medical stuff is exactly what you’d want to know.

And if your kid turns out calmer under pressure than you, right there in the genome? At least now you’ve got scientific documentation for why they’re so unbothered while you’re going through the ceiling.

I’m not bitter. I’m just scientifically informed. 😂