Key+Concepts+Feb+8-15 - Key Concepts and Terms for IB 31...

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Key Concepts and Terms for IB 31 lectures Feb 8, 11, 13, 15. Vocabulary: Allele Homozygote Heterozygote Dominant Recessive Codominant Chromosome Continuous traits Discreet trait Blending inheritance Genotype Phenotype Epistasis Pleiotropy Frequency dependent selection Heterozygote advantage Haplodiploidy Codominance Maternal Effects Monozygotic Twin Dizygotic twin People: Gregor Mendel Rothenbuler Galton Warren Concepts: What was Mendel’s basic experimental design? How many traits did Mendel examine and why were these traits easy to examine? What were Mendel’s two laws and how do they explain inheritance? Does selection act on genotype or phenotype? Why? Is behavior a genotype or phenotype? Why is it one or the other? Why are some genes linked in organisms? Hint: sex linked genes in humans. How many alleles does a gene have? Why do so many genes have a dominant / recessive nature? If dominant alleles are often favored, why do we still have recessive alleles? Why are recessive alleles not selected out of a population?
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