Question

leading and lagging strands
dna polymerase can only add new bases 5 to 3 to a strand of dna. this results in one of the new strands being made continuously and the other made in fragments. the continuously - made strand is called the leading strand. the lagging strand is made in small segments called okazaki fragments after the husband - wife scientist team that discovered them.

1. dna polymerase adds nucleotides to the new strand in the 5 to 3 direction.
2. the \boxed{} strand is made continuously.
3. the \boxed{} strand is made in fragments called \boxed{}

(there is a diagram on the right side of the text, showing the lagging strand with okazaki fragments and the leading strand, with labels of 3 and 5 ends.)

Explanation:

Question 21

From the text, it says "The continuously - made strand is called the leading strand". So we need to fill in "leading" for the strand that is made continuously.

The text states "The lagging strand is made in small segments called Okazaki Fragments". So the strand made in fragments is the lagging strand, and the fragments are Okazaki Fragments.

Answer:

leading

Question 22