amber-tortoiseshell
amber-tortoiseshell
Cat genetics in normal amounts
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mod: teknoctarkamacska.tumblr.com I'm a cat color genetics blog, but i host tournaments, too. I love explaining genetics, so if you have a question, just send in, I'll be overjoyed. (Expected answer time is 1-10 days, depending on how many asks i got recently. If i don't answer in a week, feel free to resend.) Please ask me about my genetically accurate warrior cats headcanons. Header from the Nordic Verden Norwegian Forest Cat cattery, featured cats: My Denebola's Kiana, Nordic Verden Jorinde. Profile picture is my darling Galadriel.
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amber-tortoiseshell · 6 minutes ago
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MCOLN3 - Mucolipin 3
This gene encodes one of members of the mucolipin cation channel proteins that is probably playing a role in the regulation of membrane trafficking events.
Mouse
varitint waddler (two mutations)
Inheritence: intermedier; homozygotes are usually more affected and a considerable number of them dies before birth.
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amber-tortoiseshell · 5 hours ago
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Note: I will be leaving this poll up for a week as compared to the normal one day so we can all think very hard about this important decision. As always propaganda is very welcome, fight for your favourite cat!
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amber-tortoiseshell · 10 hours ago
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Monachus monachus - Mediterranean Monk Seal
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amber-tortoiseshell · 15 hours ago
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I just want to know... what is your opinion on munchkin cats... and Scottish Fold.
I approve of FIFe not recognising them; especially scottish fold is undefendable in my opinion. I can imagine slightly more easily that the munchkin isn't so bad, but still i think why risk it.
But to be honest even aesthetically i don't really get the appeal of either. I've always preferred elegant to cute.
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amber-tortoiseshell · 20 hours ago
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2 questions: why doesnt white spotting affect the ears to cause deafness like full white does? and second, why dont white spotting/full white cause eye problems like albinism?
First: Probably because with white spotting, the top of the head is one of the last bodyparts from where the color recedes, so the inner ear has much better chances to get the proper working cells.
Second: This will be an even more speculative answer, but when i read about vision problems associated with albinism, the list, not too surprisingly, was very similar (but more extreme) to those associated with pointed cats. I think in these cases the mutated protein disrupt not only the pigmentation but the optic nerve and (maybe) the eye development itself.
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amber-tortoiseshell · 1 day ago
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Phylogenetic seal tournament
Family: Phocidae - earless seals - FINAL
Subfamily: Phocinae - northern seals & Monachinae - southern seals
Genus: Erignathus, Cystophora, Pagophilus, Histriophoca, Phoca, Halichoerus, Pusa & Neomonachus, Monachus, Mirounga, Ommatophoca, Lobodon, Leptonychotes, Hydrurga
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The final match in the subfamily earless or, as they are sometimes called, crawling seals. They got the latter name because with their short front and unrotateable rear flippers they cannot walk when out of the water like sea lions - instead, they bounce themselves forward in a motion called galumphing; the polar explorer Edward Wilson referred to the motion as lolloping. Their bodies are adapted for deep and long diving and efficient swimming: they lack external ears and have retractable nipples, internal testicles, and an internal penile sheath for as much streamlining as possible.
image source: 1, 2; audio: 1, 2
Tournament masterpost
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amber-tortoiseshell · 1 day ago
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happy 8th birthday to this chinese walrus🤎
via
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amber-tortoiseshell · 1 day ago
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Phylogenetic seal tournament
Family: Odobenidae - walruses & Otariidae - eared seals
Genus: Odobenus & Callorhinus, Zalophus, Eumetopias, Otaria, Phocarctos, Neofoca, Arctocephalus
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The most prominent feature of our last species, the only one in the Odobenidae family: the walrus, is its long tusks. These are elongated canines, which are present in both male and female walruses and can reach a length of 1 m (3 ft 3 in). Tusks are used to form and maintain holes in the ice and aid the walrus in climbing out of water onto ice, and for fighting, dominance and display by males. While the dentition of walruses is highly variable, they generally have relatively few and/or rudimentary teeth other than the tusks.
image source: 1, 2; audio: 1
tournament masterpost
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amber-tortoiseshell · 2 days ago
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Cystophora cristata - Hooded Seal
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amber-tortoiseshell · 2 days ago
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What's the minimum amount of white spotting a cat needs to have blue eyes? is it hypothetically possible for a cat to show white spotting just on their eyes and none elsewhere, so they appear to have no white?
Well, i wouldn't say it's impossible, but with regular (KIT) white spotting it's highly unlikely. However. Dominant blue eyes (PAX3) is exactly this: a white spotting gene that targets the eyes first. And with DBE, it does happen sometimes.
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amber-tortoiseshell · 2 days ago
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LVRN - Laeverin
Synonym: TAQPEP - Transmembrane Aminopeptidase Q
The role of this gene seems to be generally unknown.
Domestic cat
blotched (four mutations (including one called 'atypical swirl') with more-or-less identical phenotypes)
Inheritence: recessive.
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Cheetah
king
Inheritence: recessive.
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Tiger
pseudomelanism
Inheritence: recessive.
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amber-tortoiseshell · 2 days ago
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Scourge family headcanons?
Scourge is one of the cats who benefit greatly from incorporating dominant blue eyes into my headcanons; besides the blue eyes, his iconic white paw suddenly becomes very plausible.
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Also heterochromia. I've never seen a cat who wants to be heterochromic more than Scourge
He gets his DBE from Jake, who is latent: doesn't express the blue eyes. He's a red ticked tabby with minimal white. Quince is solid blue.
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Quince, Jake
Socks, who is black-and-white, also got Jake's blue eyes allele, and with it came the socks.
Ruby however got some orange problems, because a red father's daughter can't be simply "pale gray"; on the other paw what she can be is blue tortoiseshell tabby. Close enough.
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Socks, Ruby
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amber-tortoiseshell · 2 days ago
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love leopard seals. they are so dragon coded. that is an entire mammalian marine wyrm
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amber-tortoiseshell · 3 days ago
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A Hawaiian monk seal (Neomonachus schauinslandi) and her newborn pup lie on the sand at Kaimana beach in Waikiki, Honolulu. Officials fenced off a large stretch of the beach to protect the seal and her days-old pup. The unusual move highlights the challenges of protecting endangered species in a state that attracts millions of travellers each year
Photograph: Cindy Ellen Russell/AP
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amber-tortoiseshell · 3 days ago
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Phylogenetic seal tournament
Family: Phocidae - earless seals
Subfamily: Monachinae - southern seals - FINAL
Genus: Neomonachus, Monachus & Mirounga, Ommatophoca, Lobodon, Leptonychotes, Hydrurga
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image source: 1, 2; audio: 1, 2
Tournament masterpost
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amber-tortoiseshell · 3 days ago
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This is so cool. I'm pretty sure he has something besides the 'regular' (KIT) white spotting, but such a unique pattern, it's likely he has some own mutation. It reminds me of the ticked pattern in dogs
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I would honored to know if this beautiful fool and his spotted feet are anything more than black with low white spotting:)
His brother and litter mate is all black with some tiny spots with a few white hairs.
It’s obvious that this cat is 25% Dalmation!
Truthfully I know some cats have freckles but I don’t know if there’s a specific gene thought to be responsible or if it’s just a happy coincidence when it occurs. Maybe @amber-tortoiseshell has a better answer? They know a lot about the white spotting genes.
Aside from that he’s a cutie patootie black and white Domestic Shorthair!
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amber-tortoiseshell · 3 days ago
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CLCN2 - Chloride Voltage-Gated Channel 2
The gene encodes a transmembrane protein that maintains chloride ion homeostasis in various cells.
Corn snake
motley
stripe (not yet found)
Inheritence: recessive to the wild type, intermediate with each other.
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wild type (M/_), motley (mm/mm), stripe (ms/ms), motley-stripe (mm/ms)
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