Chapter 5 - phenotypes Inheritance Linkage Crossing over...

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CHAPTER 5 GENETICS: A REVIEW
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Outline Mendel Meiosis Inheritance Genetic Information Phenotypic Variation
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Mendel Pea plants Discrete characters Contrasting characters No quantitative characters Rediscovered around 1900
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Figure 05.01
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Meiosis Two stages First stage—chromosomes pair Second stage—similar to mitosis - Four haploid daughter cells produced
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Figure 05.02a
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Inheritance Homologous chromosomes Sex cells/gametes Haploid/Diploid Alleles
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Inheritance Dominant/recessive Phenotypes/Genotypes Homozygous/Heterozygous Incomplete dominance P, F1, F2 generations Punnett squares
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Figure 05.06
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Inheritance Law of segregation = paired factors (alleles) segregate independently of one another Law of independent assortment = factors on different chromosomes assort independently of one another
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Inheritance Multiple alleles Gene interaction Pleiotropy = a gene effects more than one trait Blending = lack of discrete alternative
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Unformatted text preview: phenotypes Inheritance Linkage Crossing over Crossing Over Genetic Information Nucleic acids DNA/RNA Nucleotides-Sugar Deoxyribose, ribose-Nitrogenous base-Phosphate group Genetic Information DNA Double helix Complementary strands Bases: A, C, G, T Codons Replication Figure 05.15 Figure 05.16 Figure 05.18 Genetic Information RNA Single helix Uracil replaces thymine Messenger RNA (mRNA) Transcription Genetic Information Proteins Ribosomal RNA (rRNA) Transfer RNA (tRNA) Translation Translation Translation Phenotypic Variation Mutations = change in DNA Point mutations Chromosomal mutations Inversion Translocation Deletion Duplication Review Mendel Meiosis Inheritance Genetic Information Phenotypic Variation Reminders Read Chapter 5 Exam 1...
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Chapter 5 - phenotypes Inheritance Linkage Crossing over...

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