Which statement about dna replication is true?

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

What are examples of the plant life and animal life that can be found in each type of terrarium

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.