ACT Science OG Test 2 - Passage I

Questions 1-6 are based on the following passage.

The figure below is a pedigree that shows the inheritance of a trait, Trait G,in a family. The presence of Trait G in an individual is determined entirely by Gene G.Gene G has 2 alleles;G,which is dominant, and g, which is recessive. Each individual represented in the pedigree ­was assigned a number (shown below the symbol for the individual) for reference. Scientists determined that the Gene G genotype of Individual 20 is gg and that the Gene G genotype of Individual 21 is Gg. based on this information, the scientists

 
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