Tuesday, July 14, 2009

Imagine that beak color in a finch species is controlled by a single gene. You mate a finch homozygous for?

orange (pigmented) beak with a finch homozygous for ivory (unpigmented) beak and get numerous offspring, all of which have a pale, ivory-orange beak. This pattern of color expression is most likely to be an example of





a. incomplete dominance.


b. polygenic inheritance.


c. pleiotropy.


d. crossing over.


e. codominance.

Imagine that beak color in a finch species is controlled by a single gene. You mate a finch homozygous for?
Yes, it is incomplete dominance.


Has your teacher used the red and white flower example yet? Both are crossed and the progeny are all pink. This is the most famous example of incomplete dominance.





Anytime color is "mixed" from the parentals, this is incomplete dominance, bc it was Not Completely inherited.


Crossing over occurs during meiosis. Pleiotropy is when more than one trait is exhibited with a disorder. Codominance is like blood type. ABO, where A blood type can either be Ai or A.





Hope that helps you understand your other options more.
Reply:after reading this website (http://users.adelphia.net/~lubehawk/BioH... i would have to say the answer is


a. incomplete dominance


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