Answer: aa
Explanation:
In a Punnett square, the lower right box will use the right letter on the top and the bottom letter along the left. This means we end up with: aa
See attached for more.
<em>Read more about </em><em>Punnett squares</em><em> here:</em>
<em>brainly.com/question/3665972</em>
Answer:
The stop codon mutation in Lucy's ADA gene stopped her ADA protein from working by putting a hault to the process of translation.
This stopped it from working because it lead to a protein that was then nonfunctional.
B