Genetics is a mind-boggling thing, no?

Will they have a prominent nose like their daddy?

Or maybe blue eyes like their mama?

jessica alba and daughters

Only time (and, you know, DNA) will tell.

Ah, the beauty of polygenic traits!

When so many genes acting together at once, wonderful variations are bound to occur.

Jessica Alba and Cash Warren daughter

And, well, these celebrities and their un-lookalike kids are living proof.

The girls' baby brother Hayes, born in 2018, appears to take after his oldest sibling.

Well, for starters, her ginger-hued hair sets her apart fromher family.

Gisele Bündchen and Tom Brady and son

Per Alba, her middle child was distinctive from the start.

“I really only expected my child to look like Honor,” Alba toldPeopleshortly after Haven’s birth.

It was a nice little surprise.'"

Nicole Richie and Joel Madden and son

Gisele Bundchen and Tom Brady

There was no way Benjamin Brady wouldn’t wind up adorable.

The mystery lies in the fact that he doesn’t really look like either parent!

And then there’s Bennie,nestled in the middle.

Tori Spelling and Dean McDermott and son

Physically, it would seem the only thing the little guy inherited was his dad’s dark hair.

That’s not to say he doesn’t have anything in common with his famous fam, though.

Judging by some of Brady’s Instagram post, Bennie might just turn out to be a baller too.

Faith Hill and Tim McGraw and daughter

But, really, Sparrow doesn’t really look like his dad or his mom.

Unless, of course, you’re countingthe kid’s punk rock style!

“Thank you for making me a mommy,” she wrote.

Mariah Carey and daughter

“Thank you for encouraging our children to be human instead of perfect.

And thank you for your unconditional love, patience, & acceptance.

I hope our son turns out to be just like you.”

Debra Messing

And, in 2017, the couple welcomeda fifth child, son Beau.

Then there’s Finn.

This adorable little guy with curly bohemian hair could pass for a sibling from an entirely different family.

Jamie-Lynn Sigler and Cutter Dykstra

“We both made it thru and Finn has always been a Mama’s boy from birth.”

Well, she’s a dead ringer for daddy.

But oldest daughter Gracie has a look and personality unlike anyone in her family.

Chris and Paula Elliott

They’re so individual."

In 2016, Gracie showed off her unique spirit when she begansinging alongside McGrawon stage and for his album.

If you ask McGraw, though, his oldest doesn’t need much guidance.

Kyra Sedgwick and Kevin Bacon

She’s got the gift!

“She’s way more talented than I am, anyway,” he toldETin 2016.

“She doesn’t need any advice from me.

She’s so bubbly and she fills up a room when she walks in.

However, one half of the duo, son Moroccan, looks just like his actor dad.

It goes without saying, of course, that Monroe is precious.

She’s her own little person and co-parents Carey and Cannon both dote on their daughter.

So it’s safe to assume that Monroe got her bold personality from her entertaining parents.

And, according to Carey, Moroccan inherited the same charisma.

“It’s fun for them.

They want to be around it,” Carey toldE!

But you better believe that doesn’t keep these two from being the best of buds.

Regardless, the kid is super-cute and, it would seem, sweet to boot.

Said Sigler, “I wanted to be an example to him of strength and courage.”

“Thank you for taking care of your mommy every single day,“she wrote on Instagramin 2017.

“I love your more than I’ll ever find the words to express.”

That’s right;Chris Elliott has a kid, and that kid is formerSNLregular Abby Elliott Kennedy.

She even worked alongsideher mom behind-the-scenes and dad on-camerawhen she appeared in the Lifetime movieStory of a Girl.