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Episode 5: Unit 5, Heredity

Episode 5: Unit 5, Heredity

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Genetics. Heredity. Chromosomes. Synapsis. Chiasmata. Phenotypes. Genotypes. Linked Genes. Recombination. Epistasis. Phenotypic Plasticity. Nondisjunction. They're all here, on this fifth episode of That Bio Girl.


Credit: See the official description of my podcast to see the sources used in all my podcast episodes.


Error 1: I meant to say "eukaryotes" instead of "karyotes" at 18:04.

Error 2: While discussing X-linked trait inheritance patterns on pedigrees, I forgot to mention tips on how to recognize X-linked dominant traits! Here are some tips on how to identify X-linked dominant traits on pedigrees from the following website: https://migrc.org/teaching-tools/genetic-inheritance-patterns/sexx-linked-dominant/

"After filling in the genotypes for individuals in several family trees that exhibit this mode of inheritance, some patterns that can be noticed are:

  • All daughters of a male who has the trait will also have the trait.
  • There is no male to male transmission; the trait follows the inheritance of the X-chromosome.
  • Sons can have the trait only if their mother also has the trait.
  • Same inheritance pattern as autosomal dominant traits in human females" (para. 2).

Error 3: I meant to clarify this in the episode, but "chiasma" refers to one location of crossing over in prophase 1 whereas "chiasmata" refers to multiple locations of crossing over in prophase 1.

I hope this helps you guys!

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