It absorbs oxygen while at the same time releases carbon dioxide across its surface
This might be wrong but I think it’s B
Answer:
Rosalind's x-ray showed that the ladders of nucleotides were inside a double helix.
Watson and Crick built models with the ladders on the outside.
the dominant allele is usually represented by a capital letter, while the recessive allele has a lowercase letter. Let's say that the gene for flamingo color is represented by the letter P. The pink allele is dominant, so it would get a capital P, but the purple allele is recessive, so it would get a lowercase p.