DNA amplified from Neandertal bones

An image representing DNA amplified from Neandertal bones.

image representing DNA amplified from Neandertal bones.

dna,evolution

  • ID: 15603
  • Source: DNALC.DNAi

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15604. Human Neandertal mtDNA tree

Human Neandertal mtDNA tree.

  • ID: 15604
  • Source: DNAi

15980. Accumulating mutations

Mutations are the grist of evolution, and have accumulated in our DNA over time. When populations separate, each group accumulates their own unique set of DNA mutations.

  • ID: 15980
  • Source: DNAi

15617. DNA nucleotide mutation

A single DNA nucleotide undergoes a "point" mutation, changing an A to a T.

  • ID: 15617
  • Source: DNAi

16461. Video 20: Matthew Meselson, clip 2

The three models of DNA replication - semi-conservative, conservative, and dispersive - and whether bias played a role in designing/interpreting the experiment.

  • ID: 16461
  • Source: DNAFTB

15608. Human/Neandertal/Chimp mutation evoluton tree

Mutations in our DNA can be used to trace the relationships between different populations and species.

  • ID: 15608
  • Source: DNAi

16462. Video 20: Matthew Meselson, clip 3

How Meselson came to read the Watson and Crick paper, then think about ways to experimentally test how DNA replicates.

  • ID: 16462
  • Source: DNAFTB

16580. Video 26: Raymond Gesteland, clip 2

Why DNA was probably not the driving force of molecular evolution in a pre-biotic environment.

  • ID: 16580
  • Source: DNAFTB

16587. Concept 27: Mutations are changes in genetic information.

Some mutations are starting points for evolution, others are responsible for disease.

  • ID: 16587
  • Source: DNAFTB

15619. Human / Chimp mtDNA tree comparison

Comparison of genetic diversity in humans and chimpanzees, using sequences from 811 humans and 332 chimps.

  • ID: 15619
  • Source: DNAi

15457. Repetitve elements, junk DNA, transposons, and compartative genomics, James Watson

James Watson talks abput repetitve elements, junk DNA, transposons, and compartative genomics.

  • ID: 15457
  • Source: DNAi