BIO SCI 97 Lecture Notes - Lecture 4: Testis Determining Factor, Zygosity, Y Chromosome

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 97
• Professor: Anthony D.Long

Document Summary

Cancer = loss of regulation of mitosis. The proof that genes are on chromosomes. Color blindness recessive hemophilia a recessive duchenne muscular dystrophy. Due to hemizygosity, more males than females affected. A recessive male mating with a homozygous dominant female has all female recessive rett syndrome dominant x-linked recessive heterozygous carriers all males have only the dominant allele (and would test cross as such) A recessive male by carrier female mating produces 50% recessive offspring (not different from autosomal recessive) Cross produces all recessive male offspring x-linked recessive 6 mostly males affected. Hemophilia in royal families of europe 7 history. Morgan"s white mutant: 1910 still not clear where these genes actually are 8. May have actually found the first white mutant 9 10. The figure shows the typical result. all female red eyed, all males white. Either red-eyed males, or white-eyed females what causes that? xwxw * xwy xw y. He could see this under the microscope.