Chrono's Genetics Training

This is an archived version of FeralFront. While you can surf through all the content that was ever created on FeralFront, no new content can be created.
If you'd like some free FeralFront memorabilia to look back on fondly, see this thread from Dynamo (if this message is still here, we still have memorabilia): https://feralfront.com/thread/2669184-free-feralfront-memorabilia/.

    For the love of all things holy I think if you did Wynn will come to your house and smite you. XD


    [spoiler=i can't believe i'm doing this; ignore]PART I
    It is an ancient Mariner,
    And he stoppeth one of three.
    'By thy long grey beard and glittering eye,
    Now wherefore stopp'st thou me?


    The Bridegroom's doors are opened wide,
    And I am next of kin;
    The guests are met, the feast is set:
    May'st hear the merry din.'


    He holds him with his skinny hand,
    'There was a ship,' quoth he.
    'Hold off! unhand me, grey-beard loon!'
    Eftsoons his hand dropt he.


    He holds him with his glittering eye—
    The Wedding-Guest stood still,
    And listens like a three years' child:
    The Mariner hath his will.


    The Wedding-Guest sat on a stone:
    He cannot choose but hear;
    And thus spake on that ancient man,
    The bright-eyed Mariner.


    'The ship was cheered, the harbour cleared,
    Merrily did we drop
    Below the kirk, below the hill,
    Below the lighthouse top.


    The Sun came up upon the left,
    Out of the sea came he!
    And he shone bright, and on the right
    Went down into the sea.


    Higher and higher every day,
    Till over the mast at noon—'
    The Wedding-Guest here beat his breast,
    For he heard the loud bassoon.


    The bride hath paced into the hall,
    Red as a rose is she;
    Nodding their heads before her goes
    The merry minstrelsy.


    The Wedding-Guest he beat his breast,
    Yet he cannot choose but hear;
    And thus spake on that ancient man,
    The bright-eyed Mariner.


    And now the STORM-BLAST came, and he
    Was tyrannous and strong:
    He struck with his o'ertaking wings,
    And chased us south along.


    With sloping masts and dipping prow,
    As who pursued with yell and blow
    Still treads the shadow of his foe,
    And forward bends his head,
    The ship drove fast, loud roared the blast,
    And southward aye we fled.


    And now there came both mist and snow,
    And it grew wondrous cold:
    And ice, mast-high, came floating by,
    As green as emerald.


    And through the drifts the snowy clifts
    I SHOT THE ALBATROSS

    Lesson 3.5: Tabby Modifiers

    Display Spoiler


    saving for later

    oh, this has nothing to do with cats but I just learned that wooly mammoths came in at least two color variations and we know from genetic analysis that this was due to mutations in their extension gene. like we know what genes extinct animals had and how that affected their fur color. isn't science amazing.

    Display Spoiler


    Okay but in all seriousness that's pretty cool.
    The extension gene seems to be everywhere! Does it appear in elephants?


    [spoiler=i can't believe i'm doing this; ignore]PART I
    It is an ancient Mariner,
    And he stoppeth one of three.
    'By thy long grey beard and glittering eye,
    Now wherefore stopp'st thou me?


    The Bridegroom's doors are opened wide,
    And I am next of kin;
    The guests are met, the feast is set:
    May'st hear the merry din.'


    He holds him with his skinny hand,
    'There was a ship,' quoth he.
    'Hold off! unhand me, grey-beard loon!'
    Eftsoons his hand dropt he.


    He holds him with his glittering eye—
    The Wedding-Guest stood still,
    And listens like a three years' child:
    The Mariner hath his will.


    The Wedding-Guest sat on a stone:
    He cannot choose but hear;
    And thus spake on that ancient man,
    The bright-eyed Mariner.


    'The ship was cheered, the harbour cleared,
    Merrily did we drop
    Below the kirk, below the hill,
    Below the lighthouse top.


    The Sun came up upon the left,
    Out of the sea came he!
    And he shone bright, and on the right
    Went down into the sea.


    Higher and higher every day,
    Till over the mast at noon—'
    The Wedding-Guest here beat his breast,
    For he heard the loud bassoon.


    The bride hath paced into the hall,
    Red as a rose is she;
    Nodding their heads before her goes
    The merry minstrelsy.


    The Wedding-Guest he beat his breast,
    Yet he cannot choose but hear;
    And thus spake on that ancient man,
    The bright-eyed Mariner.


    And now the STORM-BLAST came, and he
    Was tyrannous and strong:
    He struck with his o'ertaking wings,
    And chased us south along.


    With sloping masts and dipping prow,
    As who pursued with yell and blow
    Still treads the shadow of his foe,
    And forward bends his head,
    The ship drove fast, loud roared the blast,
    And southward aye we fled.


    And now there came both mist and snow,
    And it grew wondrous cold:
    And ice, mast-high, came floating by,
    As green as emerald.


    And through the drifts the snowy clifts
    I SHOT THE ALBATROSS

    Well, according to the Wikipedia article on it, pretty much all vertebrates, and definitely all mammals have the extension gene. (Although in cold-blooded vertebrates like chameleons it regulates changing color.)
    Most of them just have the one allele for it though, no common mutations. Elephants might be like that, since I've never heard of a melanistic or red/blond elephant, but then again I don't know how you'd tell since they don't really have any visible fur.


    The animals we know of that do have noticeable mutations: amber domestic cats, grizzled jungle cats, melanistic jaguarundis, melanistic jaguars, red or grizzled or masked dogs, Alaska Silver red foxes, white Kermode bears, chestnut horses, red cows, black sheep, like 4 different mutations in rabbits, 3 different mutations in mice, redheaded humans...and probably more I don't know about yet.


    finished! *wipes sweat off forehead* my goodness

    Checking

    Lesson 4.0: Whites (Spotting & Albinos)

    Display Spoiler


    saving for later

    [fancypost bgcolor=; border: 0px; height: 25px; width: 400px; font-family: georgia; font-size: 25px;]
    FINESSE !
    [/fancypost]

    [fancypost bgcolor=; border: 0px; height: 10px; width: 400px; font-family: georgia; font-size: 20px;]★ ★ [color=black]★


    [/fancypost]


    [fancypost bgcolor=; border: 0px; width: 200px; text-align: left; color: black]
    bumping, just as a reminder. !
    [/fancypost]



    done ;)

    [fancypost bgcolor=; border: 0px; height: 25px; width: 400px; font-family: georgia; font-size: 25px;]
    FINESSE !
    [/fancypost]

    [fancypost bgcolor=; border: 0px; height: 10px; width: 400px; font-family: georgia; font-size: 20px;]★ ★ [color=black]★


    [/fancypost]


    [fancypost bgcolor=; border: 0px; width: 200px; text-align: left; color: black]
    pretty good! you just might want to put at the end of the litter ( i call them litter tags ) information about the litter, like:


    kits must have high white (< 50%) or low white ( 50% >)
    kits can have any realistic eye color including blue
    kits can be blah


    and for albinos, you can just put albino, and put a tag that says "albinos will be (color)-eyed"


    do you need more explanation !
    [/fancypost]

    This seems like a silly question, but do cats with white spotting around their eyes or ears have a right risk of blindness or deafness than regular cats?

    Definitely not blindness -- neither white-spotted nor full-white cats have a higher risk of blindness than normal cats.


    As for deafness: no, not as far as we know. Even the breed with the highest amount of white spotting, the Turkish Van, is no more susceptible to deafness than any non-white cat.


    Oh thank you! And no, I think I understand it. :P

    If the white cat is masking colourpoint (therefore having blue eyes) will the risk of deafness be ~75% as well? Or is that only when the eye colour is caused by the white gene?

    So if there's a white x seal point litter, for example, should the probability be lower? Say there's a 50% chance of getting a white covering seal point (Ccs"Ww x cscs"ww). Should the footnotes say something like '50% of white kits with blue eyes have a 75% risk of blindness' or is that too complicated?

    VESPERTINE ! wrote:


    So if there's a white x seal point litter, for example, should the probability be lower? Say there's a 50% chance of getting a white covering seal point (Ccs"Ww x cscs"ww). Should the footnotes say something like '50% of white kits with blue eyes have a 75% risk of blindness' or is that too complicated?

    (I think you mean deafness, not blindness btw. Blindness is not linked to white fur or blue eyes at all.)


    I've considered this problem too in the past, but the probabilities turn out to be impossible to calculate because we are missing one crucial probability: how likely is it that a white kit that is NOT covering point will have blue eyes? Because without knowing that, we can't know the chance of a blue-eyed white kit covering point or not.


    So in cases like this, I just put "blue-eyed white kits have a high risk of deafness" and don't specify the actual probability.