In the previous question you identified the pattern of inheritance that the "thumb gene" follows. Which of the following pieces of evidence is the best support for your claim? 1.a mother with a normal thumb and a father with a Hitchhiker’s thumb have kids with intermediate thumbs (somewhat bent, but not much)
2. a mother with a normal thumb and a father with a normal thumb have kids with one normal thumb and one Hitchhiker's thumb
3. there are 2 possible phenotypes of thumbs
4. there are 3 possible phenotypes of thumbs