How is a phylogenetic tree similar to a dichotomous key? A) Both focus on illustrating taxonomic relationships between organisms

B) Both were founded by Carl Linneaus.

C) Both convey common ancestry from an originating organism.

D) Both map evolutionary processes from similar organisms.

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

1. the is the thinnest part of the earth. 2. the is the thickest part of the earth. 3. what metals are mentioned in the text?

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.