• MotoAsh@lemmy.world
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    6 months ago

    C’mon man… Learn genetics. Seriously. Recessive genes can ABSOLUTELY express themselves in a child from even one parent being a carrier regardless of how the parents’ genes express. In addition, random mutations can and DO produce weird things.

    • huquad@lemmy.ml
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      6 months ago

      100% this. My wife and I are both white, but our daughter was born black. Crazy how those genetics work

    • Mossy Feathers (She/They)@pawb.social
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      6 months ago

      Yeah, it’s entirely possible for a child of two brown-haired parents to have blonde or even red hair.

      For one thing, blonde hair tends to get darker as you get older, and so a lot of people who were born with blonde hair can end up with dirty blonde, light brown or even dark brown hair. This can mask the fact that they technically have the genetics for blonde hair.

      Another factor is that blonde hair is a recessive gene, which (if I remember my genetics correctly) means that not everyone who has the gene will actually gets blonde hair because they need two copies of it instead of one; something which can get further confused by whether you’re born with XX, XY, or some other combination of chromosomes (I think, if I remember correctly, that some genes are more likely to express themselves with XY chromosomes or vice versa, not sure if that’s true for hair color). So you can have a family with brown hair, but if the genetics line up just right, you can get a blonde-haired kid (if I understand correctly, this is also true for red hair).

    • isthingoneventhis@lemmy.world
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      6 months ago

      I’m also pretty sure he qualifies for the “started blond but turned brown” camp anyways. It’s so sun bleached in that photo lol

    • rwhitisissle@lemy.lol
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      6 months ago

      Also, it’s a movie and these people are actors with no meaningful genetic relationship between them.

    • HelixDab2@lemm.ee
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      6 months ago

      I had very light blond hair as a child. Both of my parents have dark brown hair. My hair is now very dark brown.

      • Snowclone@lemmy.world
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        6 months ago

        Yeah, I was light brown and blonde as a kid, black now, I have one son with blonde hair, one with black, My dad commented once that my blonde son looks just like I did as a kid, and my black haired son looks just like I do now. Also two blonde daughters, the oldest in her teens, her hair is darker in spots, but still some blonde. My youngest had a lot of red mixed in as well, but that’s all gone by now.

    • TheHotze@lemmy.world
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      6 months ago

      In fact a similar thing happened in my family but my parents have darkening hair, and my siblings have minimally darkening blonde and brown hair. There is even some red mixed in somewhere.

  • Varven@lemmy.world
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    6 months ago

    cough edit: you will also find that in return of the jedi he has brown hair meaning as he aged his hair got darker this is pretty normal in people who’s parents have brown/black hair

      • Varven@lemmy.world
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        6 months ago

        which guess what luke grew up on Tatooine which is a warm climate we can confirm this from the phantom menace Tatooine being a literal desert and as well yoda saying how feel you anakin replies cold sir because Coruscant. is a much colder climate then Tatooine

  • OpenStars@discuss.online
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    6 months ago

    Bleach effect from Tatooine? You might need to check if the carpet matches the drapes - any volunteers? :-P

    I do ofc concede that there may be… alternative explanations.

    img

    • MotoAsh@lemmy.world
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      6 months ago

      There are MANY explanations before sun bleaching. … though +1 for the Bleach reference.

  • norimee@lemmy.world
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    6 months ago

    I don’t know how that works in outer space, but here on earth that would be totally normal and is called “genetics”. Might want to look that up some time.

  • Mossy Feathers (She/They)@pawb.social
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    6 months ago

    My sister and I were both born with blonde hair (though our hair is more dirty blonde/brown now), but both my parents have brown hair; so it’s entirely possible to get blonde hair from two brown-haired parents.

    Ironically I used to wish my hair was brown because I liked the Beatles and they had brown/black hair! Now that I’m an adult and don’t have the same enthusiasm for them anymore, I wish I had blonde hair again.

    • slazer2au@lemmy.world
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      6 months ago

      Have you seen his acting career? Dude has experienced more deaths than a red shirt extra.

  • Nougat@fedia.io
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    6 months ago

    Luke has blue eyes. It is impossible for a blue eyed person to have anything but two blue eyed parents.

    Well, I don’t know where I picked up that bit of misinformation. The odds of a blue eyed person having two brown eyed parents is 25%.

    • webghost0101@sopuli.xyz
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      6 months ago

      Its the opposite, parents with blue eyes can only pass on blue genes. But also everything we learned in school about genetics is a simplification. Theres a whole spectrum of eye color hues.

      Generally darker is seems more dominant so a good rule Is a child is unlikely to have darker features then the parents.

    • AwkwardLookMonkeyPuppet@lemmy.world
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      6 months ago

      You probably reversed something you learned a long time ago. It’s impossible for two blue eyed parents to have a brown eyed child unless there’s a random mutation, which I guess can happen, but is incredibly rare.

    • Albbi@lemmy.ca
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      6 months ago

      TIL I cheated on my wife when she had… wait a second. /s

      That’s not true at all. Blue eyes needs two recessive genes where Brown eyes only need one recessive gene. So you can have parents where both have brown eyes but they both have the dominant gene for brown eyes and the recessive gene for blue eyes. Then if both recessive genes are passed on to a child they will have blue eyes.

      Of course there’s a few more complications to this as human eyes aren’t predicated on one gene, but it’s a good enough simplification.

    • Ledivin@lemmy.world
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      6 months ago

      Eh, you’re close, just backwards - if both parents have blue eyes, the child is (more-or-less) guaranteed to have blue eyes.

    • themeatbridge@lemmy.world
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      6 months ago

      I have blue eyes, and my wife has brown eyes. Our daughter has blue eyes. We also have a son with brown eyes.

      Recessive genes work that way.

      Bb x bb

      ____B___b
      b___Bb__bb
      b___Bb__bb

    • threelonmusketeers@sh.itjust.works
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      6 months ago

      The odds of a blue eyed person having two brown eyed parents is 25%.

      No, the odds of two heterozygous brown eyed parents having a blue-eyed child is 25%. I don’t think these statements mean the same thing.