ch16 - Chapter 16: The Molecular Basis of Inheritance DNA...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 16: The Molecular Basis of Inheritance DNA Substance of inheritance Located on chromosomes polymer composed of monomers called nucleotides Each nucleotide contains: 1 phosphate group 2 pentose sugar deoxyribose 3 nitrogenous base . Huge challenge to: 1) determine substance of inheritance 2) its 3d molecular structure Know in ~1950: Hereditary material on chromosomes Chromosomes composed of protein and DNA Most thought proteins contained the genetic material (more diverse molecules) Circumstantial evidence to support DNA as the hereditary material in eukaryotes: 1) cell doubles its DNA prior to mitosis(S phase) 2) During mitosis, double DNA is equally divided into daughter cells 3)Diploid cells have 2X DNA as haploid cells 4) Erwin Chargaffs Data Erwin Chargaff Compared # and ratio of nitrogenous bases in many eukaryotes Used paper chromatography (separates bases based on density) Erwin Chargaff: Results DNA composition was species-specific amount and ratio of nitrogenous bases varies between species This creates molecular diversity!!!!...
View Full Document

This note was uploaded on 04/07/2008 for the course BSC 2010c taught by Professor Janewaterman,pamelathomas during the Spring '07 term at University of Central Florida.

Page1 / 5

ch16 - Chapter 16: The Molecular Basis of Inheritance DNA...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online