Biology 1001A Lecture Notes - Lecture 6: Eukaryote, Chloroplast, Chromosome
4 Dec 2015
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Lecture 5 genome structure and variation. Bridge: differences that matter are (usually) differences in dna. C is not for complexity more dna doesn"t mean more complexity. No relationship between the amount of dna. One c value is distributed over one set of chromosomes. No relationship between number of chromosomes and complexity nucleus) Linear chromosomes are (almost) only found in eukarya (have: circular chromosomes only found in cells that don"t. Mitochondria and chloroplasts both have circular have a nucleus. Replicated chromsome: 2 molecules of dna, only then are they visible on microscope. Only look like an x during metaphase of mitosis: each chromatid is one strand of dna. Ploidy (n) refers to the number of sets of chromosomes. Karyotype: looking at a metaphase (dna replicated) cell, cut chromosomes out, arrange them longest to shortest discovered that there are 3 copies of each chromosome (karyotype of lizard, chromosomes are one strand of dna.
