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Evolutionary Genomics and Molecular Phylogeny

Biology Grade 12 Difficulty 5/5

Beginning of the lesson

Evolutionary Genomics and Molecular Phylogeny

Big idea: This Grade 12 capstone connects ortholog, synteny, molecular clock, phylogenomics, ancestral-state reconstruction to evaluate complex biological systems through evidence, uncertainty, responsible inference and real-world application.

Learning goals

  • ortholog
  • synteny
  • molecular clock
  • phylogenomics
  • ancestral-state reconstruction

Core concepts

ortholog

A gene in different species descended from one gene in their last common ancestor through speciation.

synteny

Conservation of gene order or chromosome blocks across genomes, informative about rearrangements and ancestry.

molecular clock

A model relating accumulated sequence change to time, calibrated with independent dates and uncertainty.

phylogenomics

Inference of evolutionary relationships using large sets of genes or whole genomes rather than one marker.

ancestral-state reconstruction

Statistical estimation of character or sequence states at internal nodes of a phylogenetic tree.

ortholog1synteny2molecular clock3phylogenomics4ancestral-state reconstruction5Evidence-to-inference workflow

Scientific use

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In the full lesson

  • The complete explanation
  • Worked examples
  • Common mistakes and how to avoid them
  • Test questions: 15
  • AI tutor that answers questions about the topic
  • Progress tracking for students, parents and teachers