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Lecture 6: Extra-nuclear inheritance and Recombination mapping

Lecture 6: Extra-nuclear inheritance and Recombination mapping. Reminders:. Homework 3 due this week Quiz 1 grades will be available on Thursday Exam 1 is coming up – Tuesday, 2/8. Extra-nuclear genes: mitochondria and chloroplasts. mitochondria. chloroplast.

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Lecture 6: Extra-nuclear inheritance and Recombination mapping

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  1. Lecture 6:Extra-nuclear inheritance and Recombination mapping

  2. Reminders: Homework 3 due this week Quiz 1 grades will be available on Thursday Exam 1 is coming up – Tuesday, 2/8

  3. Extra-nuclear genes: mitochondria and chloroplasts mitochondria chloroplast

  4. Model for cytoplasmic segregation of mitochondrial alleles heteroplasmy

  5. Diseases caused by mutations in mitochondrial genes

  6. Pedigree for mitochondrial inheritance Disease is only transmitted through the mother

  7. Recombinant vs. parental gametes

  8. Independent assortment produces 50% recombinants

  9. Linked alleles are inherited together

  10. Crossing over produces new combinations of alleles

  11. Chiasmata are the physical sites of chromatid crossovers

  12. Crossing over only occurs at the four-chromatid stage

  13. Multiple crossovers can include more than two chromatids

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