<span>Most of the ethical discussions related to genome editing center around human germline editing. This is because changes made in the germline would be passed down to future generations.
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Answer:

Explanation:
A question tag is used at the end of statements to ask for confirmation.
“They didn’t fail the examination, <u>did they?</u>”
The question tag used here is “did they?”.
Answer:
Boys' .
Explanation:
These are common examples and how to apply these rules.
The boy's video game console. (It belongs to a single boy.)
The Cathedral boys' will be playing. (Whereas boys' refers to a group of boys.)