Q1. Imagine that the connected earlobes are a recessive trait with 73 percent penetrance. The parents are heterozygous and homozygous recessive for the attached earlobe gene. What is the possibility that their first child will have attached earlobes?

Q2. Archaea have very diverse environmental requirements and tolerances. From what you have learned about them, which among the conditions or substances do ALL archaeans need for survival and reproduction?