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Post by poppysbreeding on Mar 12, 2024 14:08:08 GMT -8
Hello! I am fairly new with gerbil breeding and I do not breed colorpoints currently, thus I am a bit insecure about one thing.
If a gerbil is burmese and gets paired with a black gerbil that carries ch, would the black offspring be able to carry ch or do they only carry cb from the burmese parent? I was thinking they could, since I know that a CC gerbil paired with siamese would get offspring that carries either cb or ch. But it does make me very unsure  |
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Post by LilyandDaisy on Mar 12, 2024 14:29:30 GMT -8
An aa c(h)c(b) gerbil is a Siamese. So 50% of the pups would be aa c(b)c(b) i.e burmese, and 50% would be aa c(b)c(h) i.e Siamese (assuming no other recessives).
Note that c(h) is also known nowadays as c(chm) - just to avoid for confusion for others reading.
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Post by poppysbreeding on Mar 14, 2024 13:38:38 GMT -8
Yes, I know this.
But in this case it was a Burmese x Black pairing where my friend owns an Black offspring. The Black mother carries ch (sorry for using old terms) and so I was wondering if this Black offspring would be able to carry ch or if it will simply just get the fathers cb since he's cbcb?
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Post by LilyandDaisy on Mar 14, 2024 17:19:32 GMT -8
Yes, I know this. But in this case it was a Burmese x Black pairing where my friend owns an Black offspring. The Black mother carries ch (sorry for using old terms) and so I was wondering if this Black offspring would be able to carry ch or if it will simply just get the fathers cb since he's cbcb? Sorry, I got muddled up in my previous answer! No, the black pups couldn't carry their mother's c(h) because they would would inherit the dominant C from her. All the black pups would be Cc(b). |
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Post by betty on Mar 22, 2024 6:16:12 GMT -8
I'm a bit late on this one - but perhaps using different more passive language helps to figure out inheritance - as noone is 'choosing' to inherit anything - the genes are found in the colors they produce - so it is retrospective gene 'movement'.
The pup you are talking about is black in color - so the only way they can be showing their color as black is if they actually have the gene C. Seeing as the mother is the only one out of the (breeding) pair who has a C - it must be from her - and as a parent can only pass on one gene - you strike through her other gene completely for this specific pup.
Her dad can only give one gene too, but - as said above - both of his genes are c(b) (because Burmese can only be c(b)c(b)) he must give a c(b) to ALL his pups (regardless of what color they are showing on the outside).
This is a simple pairing anyway with only 3 genes in total at the c locus - leaving only 2 possible combinations - so the only gene combinations ANY of their pups can have is one of the below:
If they are Black (or solid-coated) on the outside: they can only be C c(b)
If they are colorpoint on the outside: they must be c(h) c(b)
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