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Stone-washed Genes

Probability puzzles require you to weigh all the possibilities and pick the most likely outcome.

 

Puzzle ID:#24720
Fun:*** (2.59)
Difficulty:** (2.02)
Category:Probability
Submitted By:norcekrius****
Corrected By:Sunrose

 

 

 



Both of my parents have brown eyes, as do I. My brother and my wife have blue eyes. Using the simple brown-blue model (two genes; a brown gene dominates blue gene), what are the chances of my first child having blue eyes?


Hint

Given my brother's blue eyes, what are the odds on my pair of eye-color genes?
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