Nothing in the account suggests an apple!
There is far more to it than original sin.
The “kinsman redeemer” principle cannot tolerate but one line of man.
Logic also looks to a single line, since multiple lines would defeat all the rest of the book.
How else could Noah be “perfect in his generations?”
How else could Yeshua have been the new Adam?
One could pose these kinds of questions for days on end, just reading the Bible.
One line is necessary after Noah.
And while it is probably prior to Noah, It is not necessary , because other verses can be used to build a case the is weak but not irrational.
The countless hours I spent at the seminary debating these very issues... sigh... I really miss that. Positing theories, the intellectual bantering, the give and take of individuals just as passionate as you or I. All the time knowing that the very best we could hope for was a very small glimmer of the grand plan.