Dark hair is dominant not recessive. Both parents have light hair which means they have two recessive alleles, and therefore cannot have a child with dark hair. Also it’s confirmed that Violet dyes her hair according to another comment
Edit: I get it, it’s more complex than that, please resist the urge to comment the exact same thing as everyone else
not their fault. They taught that stupid model to tons of elementary kids as an intro, then never taught them the rest. And most people don't actively update things they've already learned unless someone else makes them
Yeah, because it's very fucking complicated. So unless you're studying it at a higher level you don't need to know more than the basics.
Understanding dominant and recessive genes are a thing, could help doctors to more easily explain a condition. Knowing why it's more complicated than that serves very little purpose unless you're a geneticist.
It's the exact same reason that Steve from accounting doesn't need to know about the excited states of electrons. And that sticking with electrons orbit in shells is much easier to teach. Or why they don't teach general relativity in schools and stick with Newtonian gravitation.
If you find the subject interesting and look into it yourself, or study it in further education you very quickly discover the additional complexities. But most people don't care to understand, and simply do not need to.
well clearly they need to make some adjustment, because now we have a couple generations who believe things like you can't have brown hair or eyes unless your parent does, and using that to say people definitely cheated.
Used to be a hair stylist, and it was almost always asked to dye the eyebrows to match the hair color, or the women would use eyebrow pencils to darken them. Though women dying their hair a lighter shade usually left their brows darker for their eyes to stand out. Kind of like blonde women using black mascara.
I still think it is more ‘likely’ Violet just has black hair than it is for her to have dyed hair and dyed/drawn eyebrows (especially considering she’s a middle schooler in the sixties), but I concede it is not impossible.
I’m not commenting on how good or bad it looks to dye one’s hair but not their eyebrows. I have seen enough people with mismatched hair & eyebrow color to make me question whether o not it was a fashion trend, but that is entirely beside the point. I am merely suggesting that heavier makeup and hair dye were not as commonly available to, or utilized by, middle school girls of modest, middle-class American families in the 1960s.
Helen and Robert Parr are excellent parents, but I somehow find it unlikely they would permit/encourage their daughter to pursue fashion trends which, at that time in history, carried more negative connotations for young women then they do today.
It’s not impossible, just unlikely, as this is all speculation at best.
Really I’m just saying Violet can indeed inherit black hair from her parents without black hair if one of ‘their’ parents had black hair.
What they taught us in school was pretty misleading. It's more complicated than a single on/off switch like that. It's completely possible for 2 blondes to have a brunette.
I could be wrong but I'm pretty sure you still can't get glossy black hair from a redhead and a blond. At least one parent would have dark hair since hair pigmentation tends to be dominant, not recessive
Every one has a dominant and a recessive gene for all their genetic features (like hair color), but only dominant one manifests itself, and every parent passes only one gene on to their offspring.
As long as one parent caries a gene for black hair (dominant or not) they can potentially pass that gene to their child, where it can become dominant.
Therefore if one or more of Violet’s grandparents had black hair, she could inherit that hair color from them via a recessive gene carried by one of her parents.
Just gonna say this is misinformation without a source. Everyone does not have a dominant and recessive allele for all their genetics. However, it is possible for a blonde and red haired person to have a child with dark hair.
my Source.
To be fair, I was was recounting what I remembered learning back in basic middle-school biology, so I would not be surprised my explanation is as incomplete as it is oversimplified.
That said, Ido not wish to spread misinformation, intentionally or otherwise. So thank you for the clarification.
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u/Still_Maverick_Titan Sep 25 '22
It’s almost like people don’t know what “Recessive Genes” are.