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Discussion in 'Cat Breeding' started by Holly BtoB, Nov 27, 2019.
Am I right in believing kittens could be colourpoint ?
Yes that is correct
Yes, on average 1 in 4 will be colour-point, 2 in 4 will be carriers and the final 1 in 4 will not. This is just on average, and carriers cannot be differentiated visually. If you are wanting to keep a carrier you will have to DNA test once they are a few weeks old.
And averages are just that! I've had a litter of 5 boys & 1 girl, and another of 5 boys. Someone, somewhere must have had the counterbalancing girl litters...
Oh goodness me!!
my other lilac girl has had 2
Litters : one litter of 2 girls and 1 boy and the second litter was 3 girls and 2 boys how bizarre... I am hoping for a colour point kitten I just love them although not many people do unfortunately
Ah you have some of the girl litters! And if you want a kitten of a particular sex, that multiples up - 1/4 * 1/2 = 1/8.
Sorry I’m corrected the second litter was 2 girls and 3 boys And the first litter was 2 girls and 1 boy !! X
In layman’s terms.... my girl has more girls than boys?
It does even out over a number of litters to the 'pure' mathematical average. But most of us wouldn't be breeding enough litters from one girl to see it.
My black girl, carrying chocolate and dilute mated to a lilac stud had five blue kittens this year.
But all chocolate carriers.
yes you’d have to have a lot of litters!! Oh wow how fabulous with your girl . I’m intrigued to see if I get some colour points. Both mum and dad are lilac but their one of their parents each were colourpoint.
There's another law - Sod's. Which means all will carry point or chocolate or whatever unless you need them not to and vice versa.
I have so rarely had exactly what I wanted/needed without some form of compromise. It's frustrating
By the way, I'm speaking in general, not in relation to the op's post
That’s very true! Ok , I’m quite new to colours etc and I’m only just starting out (we all have to somewhere , right!?) there could be a possibility that my girl could have chocolate points?
Also whilst I’m here, my girl is a British shorthair. I’ve seen a few guys on here discuss colourpoints and that they’re not very “desirable” im shocked I love them. Although I love every cat and every colour / pattern going!
No. Lilac is dilute chocolate, dilute is recessive, so two dilutes can't have a dominant - shorthand a cat that's not dilute. OTOH two chocolates can have a lilac-point as long as both carry dilute.
You need to understand Mendelian Inheritance as the basis for understanding the genetics of cat coat colours & patterns:
The above link mentions Punnett Squares which are a very useful way of looking at that is going on:
Also as I mentioned above, if there is a 1 in 4 chance of a kitten inheriting one trait, and a 1 in 4 of another, then multiple 1/4 x 1/4 and you get 1/16 - 1 in 16. And if you are interested in a particular sex (which is 1 in 2), 1/16 x 1/2 = 1/32.
This is a good link though possibly OTT for you at present until you've got your head around Mendel & Punnett squares.
Wow this is so interesting. You need a medal to remember it all! I’ll get there slowly but surely!!! Wow minds blown! Thankyou
Take it step by step. The Mendelian stuff, then Punnett squares, then the genes involved in your breeding. There are probably plenty of other genes you don't need to worry about.
Fab! Thankyou so much! Do you have any answers as to why the colourpoint seem to be not as “desirable”??
Colourpointed in themselves are not seen as undesirable at all; their numbers aren't great, show wise, but they aren't considered a minority colour (or rather pattern)
What is seen as undesirable by many is having colourpointed cats in the pedigree of selfs as their presence is thought by many to adversely affect the eye colour of orange eyed cats.