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Originally Posted by carpy
firstly my post was a clear oversimplification, and to describe het as having an invisible gene is a good simple way of describing such an animal in the hobby.
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And the explanation is as untrue as saying that snakes spit eggs out of their mouth to give birth (yes, I have a family member who misunderstood what she was looking at when she saw a photo of an egg-eating snake.)
Het does not and has never meant "has an invisible gene". That's how you get unfortunate people buying "het pastel" or "het spider" royals that turn out to be completely normal - because they believe "het" means "invisible". Corn snakes have codominant traits as well as recessive ones, so trying to explain that "het means invisible in
corns" doesn't work in a practical sense either. Someone who buys a "het stripe, het motley" corn that looks normal because they think hets are invisible is getting cheated just as certainly as someone who buys a "het spider" royal that looks normal.
There's a difference between simplifying things to make them easier for a newbie to understand... and explaining them in a way that is functionally inaccurate and will lead to much greater misunderstandings.
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in which case clearly the phenotype of the individual is of course Coral snow, whilst the heterozygous aspect means there is a single gene that is unable to express its phenotype, therefore resulting in a het bloodred coral snow.
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Technically speaking, Diffusion (bloodred) behaves like a variable-expression codominant trait (and THAT is overcomplicating things for a beginner!)
D is
diffused - and
d is "not
diffused". The phenotype of a het diffused animal is visually different to an animal who is homozygous diffused
DD OR a non-carrier
dd.
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you dont teach algebra to 4 year olds in maths classes
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And you don't teach them that 2 + 2 = 5 either in the hopes they'll understand that it's really 4 someday but 5 is somehow "easier" to understand now.