Monday, January 30, 2012

The resulting pink flowers which occur after crossing red and white snapdragons is most likely a result of ___

Definately INCOMPLETE dominance.....not co-dominance.



Complete dominance is when you have either the dominant or recessive phenotype seen...this is pretty much all the examples when we first learn about genetics....3 genotypes ( AA, Aa,aa) and 2 phenotypes...



Incomplete dominance is where you get a BLENDING of the parental characters...eg Red ( RR) and White (rr) parents...Rr (pink) offspring...so 3 genotypes and 3 phenotypes



CO-dominance is where you have more than 1 dominant trait and in offspring you will see BOTH dominant traits eg in cows you have Red and White coats ( both dominant) in offspring you will see Roan ( red AND white....not pink!)

Also see this in human blood types where A and B are both dominant ( and o is recessive) so you have A, B ,AB ( and O) blood types....AB where both dominant characteristics are seen.



JUST to clarify for you./

The resulting pink flowers which occur after crossing red and white snapdragons is most likely a result of ___
incomplete gene transfer or something i cant think of the exact term but im pretty sure its incomplete something
Reply:incomplete dominance
Reply:this is incomplete dominance



Definition: A form of intermediate inheritance in which heterozygous alleles are both expressed, resulting in a combined phenotype.



For example, in cross-pollination experiments between red and white snapdragon plants the resulting offspring are pink.
Reply:It's codominance!


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