Why does the frequency of children born with down’s syndrome increase with the age of the mother? why does it not increase similarly with the age of the father? a. eggs are set aside before birth and therefore have aged; sperm are made continuously b. the gene conferring down's syndrome is located on the x chromosome c. the gene conferring down's syndrome is located on the y chromosome.

Mark's girlfriend dropped him off at a party, and then she went to visit her best friend two blocks away. when mark called his girlfriend to get a ride home, he could tell she had been drinking. what is mark's best plan of action? ride home with someone else and let his girlfriend drive herself get a friend to take him to his girlfriend's car so he can drive them both home ask his girlfriend to drive to the party, and then mark will drive them both home let his girlfriend drive them home slow to avoid getting pulled over