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If Creme is Ccr... what is CcrC? What is the extra C? I looked at Kuewi's explanations which are wonderful.. but I am still a little confused.
If you have a CcrC and another CcrC how do the pairings sort out? I tried to do a Punnet square but I don't think I was doing it right.
I think I may have it...I came up with CcrCcr, CcrC, CCcr and CC. (if this is right.. .do the CcrC and CCcr mean the same thing? ) |
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Yes CcrC and CCcr mean the same thing. That means they are carrying one copy of the creme gene, which would make them heterozygous for creme.
CcrCcr would be homozygous for creme (carries both copies of creme)
And CC would be carrying no copies of the creme gene. :)
Hopefully that helps some. |
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Ccr = cream dilute (dominant) C = no cream/dilution (recessive)
Two heterozygotes have the chance to produce offspring with the following genetics: 25% homozygous dominant, 50% heterozygous, and 25% homozygous recessive. Helps to memorize that ratio.
So in this particular case: CcrC x CcrC (two heterozygotes) = 25% CcrCcr (homo. dom.) 50% CcrC (hetero.) 25% CC (homo. rec.)
Saw your edit, you got it! Memorize the ratio above and you won't have to confuse yourself with Punnet squares. :) |
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Thank you both. So CcrC is a 50% and CC is 25% and CcrCcr is 25% so there are only 3 possibilities for a CcrC x CcrC.
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Sunny
