A Closer Look at Conception. Introduction: The Genetic Package. Each of us inherits many personal characteristics from our parents. EX: physical build, skin color, hair color & texture, eye color & shape. Just as personal traits can be passed on, so can medical conditions.By rivenburg
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Genes and Chromosomes. The Chromosome Theory of Heredity Mutations Regulation of Gene Expression. Objectives. State the chromosome theory of heredity Explain how gene linkage affects inherited traits Describe the process of crossing-over and explain how it increases genetic variety
Genes and Chromosomes. Gene Linkage, Crossing Over, Codominance and Incomplete Dominance. Mendel and Chromosomes. Mendel never asked “Where in the cell are the factors that control heredity?” i.e. where are the genes He couldn’t have answered the question though
Chromosomes and Genes. 1. Define the following terms. Zygote – cell formed from 2 gametes after fertilization Dominant – capital letter/ main characteristic Recessive – small case letter/ must have two of the same to have this physical characteristic
Genes & Chromosomes. Chapter 24. Central Dogma (p.906). DNA replicates more DNA for daughters (Genes of) DNA transcribed RNA Gene = segment of DNA Encodes info to produce funct’l biol. product RNA translated protein. Genome. Sum of all DNA Viruses (Table 24-1)
Genes, Chromosomes, etc. The tiny mechanisms of evolution. This slide intentionally left . blank. Evolution at the Population Level. Gene Flow. The Movement of Alleles The Movement of Alleles Migration and Inter-breeding. Genetic Drift. Random change in gene pool,
Genes & Chromosomes. Chromosomes - single large DNA molecule and its associated proteins, containing many genes; stores & transmits genetic info Gene - a chromosomal segment that codes for a single functional polypeptide chain or RNA molecule
GENES AND CHROMOSOMES. The Chromosome Theory of Heredity. Traits are determined by pairs of genes (alleles) A pair of genes are located on a pair of chromosomes, one gene for each trait on each chromosome of a pair.
Genes & Chromosomes. Part III, Chapters 24, 25. Central Dogma . DNA replicates more DNA for daughters (Gene w/in) DNA transcribed RNA Gene = segment of DNA Encodes info to produce funct’l biol product RNA translated protein. Genome. Sum of all DNA
Genes and Chromosomes. Gene Linkage, Crossing Over, Codominance and Incomplete Dominance. Sex Linkage. 1 exception to rule that every chromosome has a corresponding homologous chromosome … 1905 American – Nettie Stevens – mealworms Female contains 20 large chromosomes