Cat Genetics for Writers & Artists part 2: Black, Chocolate, & Cinnamon [CC]
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- čas přidán 29. 06. 2024
- EDIT: A helpful commenter made efforts to correct me on why chocolate/cinnamon cats are brown, which may be the result of the shape of the eumelanin reflecting light differently, rather than the presence of pheomelanin. However, the source they provided was in reference to dog alleles rather than cats, so please take both potential explanations with a grain of salt. If you find more info on this topic, please let me know!
Episode two!! And also probably the shortest, simplest one. Enjoy the simplicity while it lasts bc later loci can get pretty complicated!
Terminology Google doc mentioned in the video: docs.google.com/document/d/1M...
Playlist for previous videos: • Cat Genetics for Write...
Sources/Further reading:
chocolate/cinnamon mechanics + intronic mutation definition: vgl.ucdavis.edu/test/brown-cat
Comic sans is used to aid viewers w/Dyslexia, since this video is particularly text- & letter-heavy.
my patreon: / littlehungrywarrior
my warriors tumblr: / littlehungrywarriorcats
ko-fi: ko-fi.com/ellisonmurphy
00:00 - "This Video Is Part Of A Series"
00:16 - The B Locus
01:48 - "Black-base"
2:19 - Practice Squares
3:15 - Outro
![Cat Genetics for Writers & Artists part 3: Ginger/Red & Tortoiseshell [CC]](http://i.ytimg.com/vi/oNKOuTo93ps/mqdefault.jpg)
![Cat Genetics for Writers & Artists part 3: Ginger/Red & Tortoiseshell [CC]](/img/tr.png)
What is your source on the brown coloration being a result of pheomelanin? I really don't think that's the case. There are chocolate silvers, it does not change with pheomelanin intensity & is more likely just a hue that eumelanin takes under certain genetic circumstances
TYRP1 does not reduce the density of eumelanin. Cinnamons and chocolates don't have less eumelanin, rather the structure of their eumelanin is altered to reflect light differently & thus appear brown. I might try to dm you on tumblr on my computer later so we can compare sources-I tried dming on mobile about the amber thing before and it was bugged & didn't go through.
@@frickfrickkin1723 My source is linked in the desc; I struggled finding anything that went into the mechanics of the color bc most sources only discuss the mutation itself. The quote from my source reads "The wild-type B allele produces normal, black coloration (full production of eumelanin)" - "full production of eumelanin" which I took to mean the other mutations did not produce full eumelanin.
By all means, please, if I'm wrong, correct me! My tumblr DMs are open and if your source checks out I'll pin your comment as a correction. Thank you!
Bringing back haunting memories of miserably failing biology modules (and by "miserably failing" I mean getting less than 80%)
I'm working in a mathematics-heavy field after failing geometry twice & just barely making it thru algebra 1 without ever taking another math class. you're fine lol
Yay! May the algorithm be kind to you ^^
:) as someone who is super interested in genetics and grew up with warrior cats, this is super cool to me. Enjoying these videos!
I am SO excited for the rest of this :D super interesting !!
Oooo more punnet squares. Mmm.
1. 25% Homozygous black. 25% Homozygous chocolate. 50% Black heterozygotes.
2. 25% Homozygous black. 50% Heterozygous black. 25% Homozygous cinnamon.
3. 25% Homozygous cinnamon. 25% Heterozygous Chocolate (bb¹). 25% Heterozygous Black (Bb) 25% Heterozygous Black (Bb¹)
Love these vids btw!!
Woo! Next video!
very informative b
thank u baaaaabe
is there any way a solid cat could appear both black and brown? (even if genetically theyre just black or just brown), ive seen a few pictures of black cats with a brown underside i think? and they dont appear to be colorpoints.
I've never heard of that happening, never seen a picture of it, & know no genes that cause that. Sometimes, a black cat who sits out in the sunlight a lot can become "tarnished," wherein they're still black but they look kinda brown in the right lighting, but that affects the whole body.
Are you perhaps looking for a way to make Spiderleg? I usually just make him tarnished black, but if you wanna get Book Accurate™, I suppose he could be a black/chocolate chimera or something?
@@littlehungrywarrior I'd heard of the tarnishing thing but it'd be really weird to have it only on their underside? Since that's not where the sun usually hits them. And yeah I kinda am looking to make spiderleg but when I searched up brown and black cat some pictures actually came up and got confused lol. Thank you for your time :))
@@jirem4820 No prob! Even if a cat exclusively laid belly-up in the sun it wouldn't make them look like Spiderleg lol, it'd just mean that when the light hits them just right their tummy is a little lighter. If you have pics of cats whose geno/phenotype you can't identify, feel free to DM me on Tumblr & I'll try to identify them for you!
could it be a lighter undercoat?
This is very nice.
Wohoo! Very cool