learnin' genetics - private w/ machi

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  • Okay, so I know basic terminology like recessive and dominant genes, the Punnet square, and genotypes and phenotypes. I should go over them, but... eh. <3

  • [fancypost borderwidth=0px; font-size: 8pt; line-height: 12px; width: 350px; text-align: justify;]sure thing! so we're going from the beginning, yes c:

  • [fancypost borderwidth=0px; font-size: 8pt; line-height: 12px; width: 350px; text-align: justify;]alrighty!


    first off, here are some definitions and a punnet square how-to for a refresher



    Homozygous - when a cat has two copies of the same gene (e.g two black genes)
    Heterozygous - when a cat has two genes, each different. (e.g one chocolate and one black)
    Phenotype - the most basic way to describe something (e.g a cat, a dog)
    Genotype - the word used to repreesent a gene. (e.g Bb, Dd, Aa, ww, I-, oo)
    Eumenalin - the word used to show the black gene.
    Pheomenalin - the word used to show the red gene.
    Peibaldism - white spotting
    Heterochromia - two different coloured eyes
    Dense - an undiluted cat (e.g fawn, lilac, cream tabby)


    dominant and recessive are self explanatory c:


    and here is the punnet square thingy:

  • [fancypost borderwidth=0px; font-size: 8pt; line-height: 12px; width: 350px; text-align: justify;]I retyped the definitions because it helps to stamp them in your mind.


    alrighty, so this is to introduce the black factor, Dilution and the beginning of the red factor
    Okay! first of all, we'll start with the vocab that'll be used throughout training.


    Homozygous - when a cat has two copies of the same gene (e.g two black genes)
    Heterozygous - when a cat has two genes, each different. (e.g one chocolate and one black)
    Phenotype - the most basic way to describe something (e.g a cat, a dog)
    Genotype - the word used to reperesent a gene.
    Eumenalin - the word used to show the black gene.
    Pheomenalin - the word used to show the red gene.


    Before we start on the black gene, in my head I represent the black and red gene as a flower, the middle being the basic group (the black gene, the red gene) and the petals being sub catagories. (e.g black, chocolate, cinnamon)
    now, as mentioned above the eumenalin gene has 3 strands. black, cinnamon and chocolate.


    BB = Black
    bb = chocolate
    bb1 = cinnamon


    As you also may know, all cats on wcrpg carry dilute. The dilute for black is blue, the dilute for chocolate is lilac and the dilute for cinnamon is fawn.


    DD = non dilute
    Dd = non dilute cat carrying the dilute gene (but all cats carry this anyways)
    dd = dilute


    Finally, the male and female chromosomes. The male have only one O gene and the other is Y, where as the mother have both O. Kittens can only have one cromozone from each parent (including the one that makes their gender) so the male get their genes from the mother and the females get their genes from the male. but in some cases if the male is red and the female is black, then the female can be tortie, taking each 1 cromosone from each parents and 'blending' it together to make a tortie.


    oY = black factor male
    OY = red factor male
    oo = black factor female
    OO = red factor female
    Oo = tortie female


    You understand, right? :) If so, we'll start with guessing the cat from the codes.

  • [fancypost borderwidth=0px; font-size: 8pt; line-height: 12px; width: 350px; text-align: justify;]try to tell me what these cats are c:


    Bb, Dd, Oo


    bb1, dd, OY


    b1b1, Dd, oo


    b1b1, dd, oY

  • So, wait, is the last part where the gender is determined? I see o and y which makes me think of the x and y chromosomes, but it's about red and black...?

  • [fancypost borderwidth=0px; font-size: 8pt; line-height: 12px; width: 350px; text-align: justify;]o is the definitive red gene. I don't quite understand your question

  • What I'm trying to say is, the female and male chromosomes part is a bit confusing to me. What I learned before was that the chromosomes are X and Y, with a female having two X's and a male having one of each, right? I don't understand what you meant when you said "the male get their genes from the mother and the females get their genes from the male".

  • [fancypost borderwidth=0px; font-size: 8pt; line-height: 12px; width: 350px; text-align: justify;]females have two x's.


    males have an x and a y.


    males take there colours from both parents.


    females take there colours from both parents.


    it was a typo

  • [fancypost borderwidth=0px; font-size: 8pt; line-height: 12px; width: 350px; text-align: justify;]I want you to ignore the red factor for now. I feel as if you should try to get the hang of the black factor first.


    Try this instead:


    Feel free to look up images of what these colours look like to compare them. I'm mobile rn.
    So a basic review of the black factor[hr]
    The black bases are located on the B-locus. These colours are NOT SEX LINKED so they can go to either gender of kittens. That's why there is no need for gender separation.


    Chocolate and Cinnamon are basically just much lighter versions of black, kind of like how the diluted colours are lighter versions of there base colours, fawn and cinnamon for example.


    Black is most dominant of the three black bases. It is represented by a 'B'. It can carry chocolate and cinnamon but can be carried by neither. BB, Bb and Bb1 are all black cats.


    BB - Homozygous black
    Bb- Black carrying chocolate
    Bb1 - Black carrying cinnamon



    Chocolate is second dominant. It can carry cinnamon but not black. Chocolate is shown by a small 'b'. Being that it is still dominant, it only needs one copy to show, unless it's paired with black or its diluted version blue. So if chocolate was paired with black, you would automatically assume that the other black cat carries a copy of the chocolate gene, so chocolate would be possible.


    'bb' and 'bb1' are chocolate cats. 'bb1' is chocolate carrying cinnamon.


    Now cinnamon is what I call doubly recessive. It requires two copies to even show up at all. 'b1b1' is all that cinnamon can and will be. It cannot ever carry anything, but can pretty much be carried and masked my anything. If there isn't two copies, cinnamon won't show.


    (( I'll do it bit by bit so I don't overwhelm you ^^

  • [fancypost borderwidth=0px; font-size: 8pt; line-height: 12px; width: 350px; text-align: justify;]try to tell me what these genotypes mean-


    Bb
    BB
    bb1
    b1b1
    Bb1
    b1B