How many amino acids are affected in a point mutation

Which taxon group is more specific, in regards to organisms that are in that group? mammalia animalia

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.