Answer:
A
Explanation:
Individuals are not born immediately able to play the piano. Therefore, piano playing is not an inherited trait. You get good because you practice.
This is in contrast to physical traits like hair color, ability to role your tongue, or genetic diseases. These are not learned at all, instead, they appear regardless of lifestyle.
However, some genes are thought to predispose you to musical talent. Two people could be born with exactly the same genes that make them good at piano. If one practiced for 8 hours every day, then they will be very good. If the other one never practiced, they wont be able to play.
In contrast, one person could have genes that make them great at piano, and one could have genes that make them terrible. Even if they practice the exact same amount, the one with the better-suited genes will likely progress more quickly!
However, the skill is still a learned trait.
Answer:
All of the F1 progeny would be wild-type.
If the two mutations are in different genes, then we expect complementation to occur (each mutant strain provides a functional copy of the gene that is defective in the other strain) and wild-type progeny to be produced
