How does sam prepare the deer hide so he can make things he needs from it?

This is from experience, but I would Dry it out and remove the inner linings that will go bad if left out. Like skin or under skin/fat

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c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.