AP Bio Ch. 15, part 2
Organismal 3
Human y chromosome
Sex determination & linkage
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X and Y Chromosomes. Sex Chromosomes Mammals use a chromosomal method of determining sex: XX is female and XY is male. Birds use a ZW system: ZZ is male.
Chapter 15: Genetics. Chromosome Theory of Inheritance The chromosome theory of inheritance states: –Mendelian genes have specific loci (positions) on.
15. Sex Determination in Animals (1)
Glencoe Chapter 3 Describing Motion Who Wins????? Racer with the fastest speed? Racer with the shortest elapsed time? What is motion? What is speed?
Chromosomal Basis of Inheritance Chapter 15. Genetic work done on fruit flies - takes little time to observe many generations. Thomas Morgan - fruit fly.
Cell Division and Inheritance. Units of inheritance are called genes. Genes are found in chromosomes and chromatin. Chromatin consists of DNA and.
Fig. 15-6a (a) The X-Y system 46 XY 46 XX Parents 46 XY 46 XX 23 X 23 X 23 Y or Sperm Egg + Zygotes (offspring) HELP! I need genes!
