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Chromatin

Plant Chromatin Dynamics (2018)

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Biology
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Branches of biology
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Chromatin
Attachment theory
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AP Bio_dna_replication

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Biology
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Biology
Genetics
DNA replication
DNA polymerase
Chromatin
DNA
Okazaki fragments
Primase
Circular bacterial chromosome
Eukaryotic DNA replication
Telomere
Histone

DNA Replication: A Closer Look * The copying of DNA is remarkable in its speed and accuracy * More than a dozen enzymes and other proteins participate in DNA replication Getting Started * Replication begins at particular sites called origins of replication, where the two DNA strands are separated, opening up a replication ?bubble? * A eukaryotic chromosome may have hundreds or even thousands of origins of replication * Replication proceeds in both directions from each origin, until the entire molecule is copied * At the end of each replication bubble is a replication fork, a Y-shaped region where new DNA strands are elongating * Helicases are enzymes that untwist the double helix at the replication forks * Single-strand binding proteins bind to and stabilize single-stranded DNA

Amino Acid II

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Biology
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Biology
Genetics
DNA
Molecular biology
Molecular genetics
Epigenetics
Chromatin
Histone
Nucleic acid double helix
Nucleosome
Nucleic acid
Transcription

Nucleic Acids, DNA Structure, and Chromosomes Nucleotides are the building blocks of nucleic acids One (NMP), two (NDP), three (NTP) phosphates 5 different bases: A, G, C (DNA and RNA), T (DNA), U (RNA) 2 different sugars: ribose (RNA), deoxyribose (DNA) Two kinds of 5-carbon sugars Five kinds of nitrogen containing bases The sugars and bases are linked through a glycosidic bond nucleoside = N-containing base linked to a 5 carbon sugar (no phosphate) nucleotide = N-containing base linked to a 5 carbon sugar & one or more phosphates Nucleotides are linked through phosphodiester bonds Link between nucleotides: 5? C of sugar - phosphate- 3? C of sugar (backbone) Variable portion: base

Amino Acid I

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Biology
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Biology
Genetics
DNA
Molecular biology
Molecular genetics
Epigenetics
Chromatin
Histone
Nucleic acid double helix
Nucleosome
Nucleic acid
Transcription

Nucleic Acids, DNA Structure, and Chromosomes Nucleotides are the building blocks of nucleic acids One (NMP), two (NDP), three (NTP) phosphates 5 different bases: A, G, C (DNA and RNA), T (DNA), U (RNA) 2 different sugars: ribose (RNA), deoxyribose (DNA) Two kinds of 5-carbon sugars Five kinds of nitrogen containing bases The sugars and bases are linked through a glycosidic bond nucleoside = N-containing base linked to a 5 carbon sugar (no phosphate) nucleotide = N-containing base linked to a 5 carbon sugar & one or more phosphates Nucleotides are linked through phosphodiester bonds Link between nucleotides: 5? C of sugar - phosphate- 3? C of sugar (backbone) Variable portion: base

Chapter 12 Notes

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Biology
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Cell cycle
Microbiology
Cell biology
Cellular processes
Molecular genetics
Fission
Cell
Chromatin
Mitosis
Prokaryote
Reproduction
Health
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mitosis

Biology 240 SI Session #10 Chapter 12 SI Leader: Lauren Curtis Email: [email protected] Prokaryotes: Describe the process of 'binary fission' : Binary fission is the process by which a prokaryotic cell cell reproduces asexually by dividing in half. This does not include mitosis in prokaryotes, but a process all in it's own. The cell duplicates it's DNA, doubling in size, and then splits into two daughter cells. Here are some terms you need to be familiar with in regards to cell division... Chromatin: A DNA-protein complex, represents DNA in it's unfolded and non condensed form. Chromosomes: Represents DNA folded and condensed down as the cell gets ready to divide. It organizes the DNA in a way where parts won't get lost when the cell splits in half.
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