BIOL110s05-21 - BIOL 110 Principles of Biology Spring 2005...

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1 BIOL 110 : Principles of Biology Spring 2005 Lecture 21, M 3/14/05 http://www.smccd.net/accounts/staplesn/biol110/ ANY MORE EXAM #1 Extra Credit rewrites??? ONLINE Quizzes (bi-weekly) from now on! Link TO QUIZZES: (Cañada College I.D. for login and password; You can change it yourself with the REGISTER button) http://smcwebtest.smccd.net/accounts/staplesn/index.tpx Time-limited (so study well first!); ~ 30 minutes to complete; once only. Posted this weekend!! Study Guide for MT2 available. (Ch. 4-8) Genetics Problems: #1-7 (look at 8 & 9 too) Review Session, Wed.: 12:30pm-2pm in Lab. Extra office hours: W, 2-3:30pm and Thurs., 1-3pm. REVIEW: Ch. 8: Genetics: Observing Patterns of Inherited Traits. – Ideas on heredity – Blending, Homunculus – Terminology – genes, alleles, loci, P, F1, F2, homozygous, heterozygous, genotype, phenotype, dominant, recessive, Punnett Square; – Mendel’s Experiments & Laws: Monohybrid Cross (3:1)…. TODAY: Ch. 8: Genetics: Observing Patterns of Inherited Traits. – Mendel’s Experiments & Laws: Monohybrid Cross/ Segregation; Dihybrid cross/ Independent Assortment. – Exceptions/Beyond Mendel – Codominance, Incomplete Dominance, Pleiotropy, Environment,
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2 1. Mendel’s Law of Segregation • An individual inherits a unit of information ( allele ) about a trait from each parent • During gamete formation (meiosis), the alleles segregate from each other NO BLENDING! Units/Alleles remain distinct and separable!!! A A A A A A A A A A AAAA aaaa a a a a a a a a a a A a fertilization produces heterozygous offspring meiosis II meiosis I (chromosomes duplicated before meiosis) Homozygous dominant parent Homozygous recessive parent (gametes) (gametes) Separation of chromosomes during Meiosis explains the Law of Segregation!
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BIOL110s05-21 - BIOL 110 Principles of Biology Spring 2005...

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