Genetics

Scott is doing a project on genetics for Biology.  (Don't even ask why we have been working on this the last 2 days of Christmas vacation....)  Anyway, we have been calling family members to ask the following questions:

1.  Are your ear lobes attached?  No, for me.

2.  Do you have hairy fingers or toes?  No, for me (I must confess to being relieved about that).

3.  Can you roll your tongue?  Yes, for me.

4.  Do you have hitchhiker's thumb?  Meaning if you hold your thumb out, does the top joint bend back.  No, for me.

Apparently these are all genetic traits.  Once Scott has filled out four separate pedigree charts (one for each trait), he has to come to some sort of genetic conclusions.  Aahh, the joys of high school Biology.

What about you?  How would you answer those four question?