Radish flowers may be red, purple, or white. A cross between a red-floweredplant and a white-flowered plant yields all-purple offspring. The part of the radishwe eat may be oval or long, with long being the dominant trait. If true-breedingred long radishes are crossed with true- breeding white oval radishes, the F1 willbe expected to be which of the following?

a. White and long
b. Purple and oval
c. Red and oval
d. Purple and long
e. Red and long

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

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the scientific method.