In humans, the ability to roll one's tongue follows the dominant/recessive pattern of inheritance. the allele for tongue-rolling is dominant to the allele for non-tongue-rolling. if two homozygous parents can roll their tongues, what is the probability that their child will also be able to?

1. the fifteenth amendment guaranteed for all us citizens, regardless of "previous condition of servitude." freedom citizenship voting rights religious tolerance 2. which group was still not allowed to vote following passage of this amendment? women poor men rich men former slaves 3. the fifteenth amendment was the last of the amendments. carpetbagger lincoln reconstruction scalawag