DNA replication Flashcards

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1
Q

DNA replication overview

A

a cell duplicating its DNA before cell division, ensuring that each daughter cell receives an exact copy of the genetic material

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2
Q

what type of a process is DNA replication

A

semi-conservative

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3
Q

semi- conservative

A

each daughter DNA molecule consists of one parental strand and one newly synthesized strand

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4
Q

DNA replication definition

A

the biological process of producing 2 identical replicas of DNA from one original DNA molecule

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5
Q

3 theories of DNA replication

A
  1. semi-conservative
  2. conservative
  3. dispersive
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6
Q

step 1 of DNA replication

A
  • DNA strands unzip and is catalyzed by DNA helicase.
  • hydrogen bonds between the complementary base pairs are broken
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7
Q

step 2

A

the 2 separate stands of DNA act as a template for the synthesis of the new DNA stand

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8
Q

step 3

A

free nucleotides in the nucleus pair up (complementary base pair) on the template stand and form hydrogen bonds

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9
Q

step 4

A

adjacent nucleotides act together via. condensation reaction to form phosphodiester bonds
- catalyzed by DNA polymerase

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10
Q

step 5

A

DNA polymerase moves along the stand, catalyzing the formation of the bonds

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11
Q

step 6

A

the 2 DNA molecules twist and form a double helix

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