BIO 185 Lecture 22: Lecture 22
Document Summary
Genotype to phenotype/gene dosage, sex determination, and non-chromosomal inheritance (chapter 13, 15. 2, 15. 4) Sex chromosomes/sex determination: what are some possible tests that would allow us to determine whether this athlete should be allowed to compete as a female/male? physical appearance chromosome test (xx or xy) speci c genes (ex. Testosterone = androgen (hormone that induces male characteristics) Does this seem logical based on what we talked about related to non-disjunction? non-disjunction related to gene dosage one of the x chromosomes gets fully inactivated in women (x-inactivation) only one x is producing proteins. Colorblindness is a x-linked disorder (which is why it"s more prevalent in males) We have been focusing on chromosomal inheritance but is all of a eukaryotic (check. Slides: some organelles have dna, a. mitochondria (genes for etc and atp synthase, b. chloroplasts (genes for photosynthesis, c. plastids = organelles in plants; genes control pigmentation, only inherited from mother!
