provide the barrier that marks the boundaries of a cell.
Answer:
An allele (UK: /ˈæliːl/, /əˈliːl/; US: /əˈliːl/; modern formation from is one of two, or more, forms of a given gene variant.
Answer:
D.
Explanation:
I think it may be point because only one section is changing.
Answer:
D) In DNA, adenine, thymine, guanine, and cytosine join together and carry all of the genetic information. RNA is made from adenine, uracil, cytosine, and guanine and is used to make proteins.