Answer:
Improving food storage facilities
Elbow is the joint between upper and lower arm while wrist is the joint between lower arm and hands.
So below :P
The correct answer would be DNA Profiling. When Joe denied being the father of Lisa, Lisa's mom took Joe to the court to prove that he was Lisa's biological father. One way of proving that he's truly the biological father is by undergoing both DNA's into DNA profiling.
You have give the question because we need to look the f1 generation traits first