Biology – Quick Reference Notes (Transcript Summary)

Brainbow Neurons in the Hippocampus

  • Image shows neurons in the hippocampus labeled with multiple fluorescent colors to visualize connections.

  • Known as Brainbow (rainbow) imaging; highlights neuronal wiring.

Cloned Cat CC (CopyCat)

  • Top-right image shows CC, a cloned cat produced from a somatic cell (somatic cell nuclear transfer).

  • Clone is a later-born twin of the original cat; “copycat.”

  • Cost to clone: 10,00010{,}000–25,00025{,}000.

  • Sister Chloe is calico; calico patterning observed in the clone’s kin.

Chromosomes and Telomeres

  • Cheek cell contains 4646 chromosomes; 2323 pairs.

  • After duplication, chromosomes appear as X-shaped structures.

  • Fluorescent dots mark telomeres (the ends of chromosomes).

  • Telomeres protect chromosomes and shorten with age; aging is linked but not solely determined by telomere length.

  • Increasing telomeres does not guarantee longer life and can raise cancer risk.

Canvas Resources and Course Logistics

  • Two class sections (K101 at 10:30 and K102 at noon); students can mix and match across sections for attendance/points.

  • Canvas site as home base: contains syllabus, Kaltura channel, and modules.

  • Modules house the course materials; additional resources include Pearson access and various videos.

  • Biology resource center updates, thinking skills resources, and metacognitive tools.

  • Lab manual available as PDF; paper lab manual recommended; electronic recitation pad is an acceptable alternative to paper recitation.

  • Exams, lab times, and recitation times are listed in Canvas.