Which fingerprint pattern does Sam have? Sam's thumb print shows a flow of ridges that enters from one side and exits from the other side, with a gradual rise in the center. Sam's fingerprint has the arch pattern.

Plain arch pattern.

Explanation:

Fingerprint is an impression of the friction ridges of all or any part of the finger. Plain arch in the fingerprint-pattern- drawing is where the papillary ridges enter, on one side, curve in the center and exit or tend to flow on the opposite side. Statistics in the population with this pattern 5%. The plain arch does not have ridges forming angles, nor does it have raised ridges.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

read more on -