Brooklyn College BIOL 1010 : Lecture Guide (topic iii)

II. Principles of Inheritance

Text: Chapter 9

1. Gregor Mendel and the foundation of genetics
2. Monohybrid and dihybrid crosses
3. How genes express themselves
4. Chromosome variation and human genetics

Learning Objectives:

1. You should be able to use and define/describe the following words:

   homozygous		heterozygous		gene
   monohybrid		dihybrid		allele
   phenotype		genotype		dominance
   recessive		codominance		autosome
   incomplete dominance		Punnett square		XXY condition
   Klienfelter syndrome		sister chromatid
   contact inhibition		Turner syndrome		nondisjunction
   aneuploid		polyploid
   X-linked inheritance		locus
   independent assortment

2. You should be able to:
   1. Use a Punnett square to illustrate monohybrid and dihybrid crosses.
   2. State Mendel's laws of segregation and independent assortment.
   3. Define autosomes and sex chromosomes
   4. Explain how changes in chromosome number and structure affect inheritance and give examples.

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