to understand the process of dna replication, complete each sentence by selecting the correct term. dna replication occurs during the ____ phase of interphase. during replication an exact copy of a dna ____ is produced. each strand of the double stranded dna serves as a template for a ____ strand. the old strand is called a parental strand and the template is called a ____ strand. during replication the parental strand unwinds and unzips due to the breaking of the ____ bonds. new complementary ____ pair with the old strands. a pairs with t while c pairs with ____

Question

Accepted Answer

### 1. DNA replication occurs during the ______ phase of interphase.
# Brief Explanations:
Interphase has G1, S, and G2 phases. DNA replication happens in the S (synthesis) phase.
# Answer:
S

### 2. During replication an exact copy of a DNA ______ is produced.
# Brief Explanations:
DNA is structured as a double - helix, and replication produces an exact copy of the DNA helix.
# Answer:
helix

### 3. Each strand of the double - stranded DNA serves as a template for a ______ strand.
# Brief Explanations:
In DNA replication, each old strand acts as a template for a new strand that is identical (in terms of base - pairing rules) to the complementary strand. The new strand is identical in sequence (following base - pairing) to the original complementary strand. So the new strand is an identical strand (in terms of the genetic information it carries, as it is a copy).
# Answer:
identical

### 4. The old strand is called a parental strand and the template is called a ______ strand.
# Brief Explanations:
The parental (old) strand acts as a template for the new strand. The new strand is complementary to the parental strand, and the parental strand (template) is also called the complementary strand in the sense that it pairs with the new strand. Or, more accurately, the old strand (parental) is the template for the new complementary strand, and the old strand can be thought of as the complementary - template strand. Wait, actually, the old strand is the parental strand, and when it acts as a template, the new strand is complementary to it. So the template (old) strand is the one that the new complementary strand is made from. So the word here should be "complementary"? Wait, no, maybe "opposite"? Wait, no. Wait, the old strand is parental, and the new strand is complementary. But the question says "the template is called a ______ strand". The template (old strand) is the one that the new strand is complementary to. Wait, maybe I made a mistake. Let's think again. In semi - conservative replication, each new DNA molecule has one old (parental) strand and one new (daughter) strand. The old strand is the template, and the new strand is complementary to the old (template) strand. So the template (old) strand is the one that the new complementary strand is synthesized from. So the word here should be "complementary"? Wait, no, the options include "complementary" (but the first option was cut off, maybe "complementary" is the first option). Wait, the options are: compliment (maybe complementary), H, identical, helix, G1, nucleotides, opposite, G, S. Wait, maybe the correct word is "complementary"? But let's check the options. Wait, the fourth sentence: "The old strand is called a parental strand and the template is called a ______ strand." Wait, maybe the answer is "complementary"? But let's see the other options. Alternatively, maybe "opposite"? No. Wait, maybe I misread. Let's check the options again. The options are: (first option: maybe "complementary"), H, identical, helix, G1, nucleotides, opposite, G, S. Wait, perhaps the correct answer is "complementary" (assuming the first option is "complementary"). But let's proceed.

Wait, maybe the correct answer is "complementary". So:
# Brief Explanations:
The old (parental) strand acts as a template for the synthesis of a new complementary strand. The template (old) strand is complementary to the new strand being synthesized.
# Answer:
complementary (assuming the first option is "complementary")

### 5. During replication the parental strand unwinds and unzips due to the breaking of the ______ bonds.
# Brief Explanations:
DNA strands are held together by hydrogen bonds between complementary base pairs. During replication, these hydrogen bonds are broken to unwind and unzip the DNA.
# Answer:
H (hydrogen)

### 6. New complementary ______ pair with the old strands.
# Brief Explanations:
DNA is made up of nucleotides. During replication, new complementary nucleotides pair with the bases on the old (parental) strands.
# Answer:
nucleotides

### 7. A pairs with T while C pairs with ______.
# Brief Explanations:
In DNA base - pairing, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).
# Answer:
G

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QUESTION IMAGE

Question

Explanation:

1. DNA replication occurs during the ______ phase of interphase.

Answer:

2. During replication an exact copy of a DNA ______ is produced.