Question 1

Why do positively charged amino acids appear more often than usual in histone proteins?

Accepted Answer

A) Because histones have a higher molecular mass, which improves DNA compaction 
B) Because histones are strongly attracted to the positively charged phosphate backbone of DNA 
C) Because histones and DNA have opposite charges, which improves the compaction of DNA into nucleosomes 
D) Because histones and DNA have the same charge, which improves the compaction of DNA into nucleosomes 
A) Because histones have a higher molecular mass, which improves DNA compaction 
B) Because histones are strongly attracted to the positively charged phosphate backbone of DNA 
C) Because histones and DNA have opposite charges, which improves the compaction of DNA into nucleosomes 
D) Because histones and DNA have the same charge, which improves the compaction of DNA into nucleosomes

Question 2

What types of amino acids are most responsible for the binding of DNA to histones?

Accepted Answer

A) Hydrophobic amino acids 
B) Polar amino acids 
C) Positively charged amino acids 
D) Negatively charged amino acids 
A) Hydrophobic amino acids 
B) Polar amino acids 
C) Positively charged amino acids 
D) Negatively charged amino acids

Why do positively charged amino acids appear more often than usual in histone proteins?

What types of amino acids are most responsible for the binding of DNA to histones?

Overview of Genetics

Mendelian Inheritance

Chromosome Transmission During Cell Division and Sexual Reproduction

Extensions of Mendelian Inheritance

Non-Mendelian Inheritance

Genetic Linkage and Mapping in Eukaryotes

Genetic Transfer and Mapping in Bacteria and Bacteriophages

Variation in Chromosome Structure and Number

Molecular Structure of DNA and RNA

DNA Replication

Gene Transcription and RNA Modification

Translation of MRNA

Gene Regulation in Bacteria

Gene Regulation in Eukaryotes I: Transcriptional Regulation

Gene Regulation in Eukaryotes II: Epigenetics and Regulation at the RNA Level

Genetics of Viruses

Gene Mutation and Dna Repair

Recombination and Transposition at the Molecular Level

DNA Technologies

Biotechnology

Genomics I: Analysis of DNA

Genomics II: Functional Genomics, Proteomics, and Bioinformatics

Medical Genetics and Cancer

Developmental Genetics

Population Genetics

Quantitative Genetics

Evolutionary Genetics

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Exam 10: Chromosome Organization and Molecular Structure

Why do positively charged amino acids appear more often than usual in histone proteins?

What types of amino acids are most responsible for the binding of DNA to histones?

Overview of Genetics

Mendelian Inheritance

Chromosome Transmission During Cell Division and Sexual Reproduction

Extensions of Mendelian Inheritance

Non-Mendelian Inheritance

Genetic Linkage and Mapping in Eukaryotes

Genetic Transfer and Mapping in Bacteria and Bacteriophages

Variation in Chromosome Structure and Number

Molecular Structure of DNA and RNA

DNA Replication

Gene Transcription and RNA Modification

Translation of MRNA

Gene Regulation in Bacteria

Gene Regulation in Eukaryotes I: Transcriptional Regulation

Gene Regulation in Eukaryotes II: Epigenetics and Regulation at the RNA Level

Genetics of Viruses

Gene Mutation and Dna Repair

Recombination and Transposition at the Molecular Level

DNA Technologies

Biotechnology

Genomics I: Analysis of DNA

Genomics II: Functional Genomics, Proteomics, and Bioinformatics

Medical Genetics and Cancer

Developmental Genetics

Population Genetics

Quantitative Genetics

Evolutionary Genetics

Filters