Biology 1001A Lecture Notes - Lecture 5: Homo Sapiens, Nucleosome, Small-C
8 Nov 2012
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Independent study outcomes refers to the amount of dna contained within a haploid nucleus (a gamete for ex: the meaning of c-value. Or one half the amount in a diploid somatic cell of a eukaryotic organism. Polyploidy is most common in plants: the paradox or enigma associated with c values. Complex puzzle surrounding the extensive variation in nuclear (the evolution of the) genome size among eukaryotic species. At center of enigma is the observation that genome size does not correlate with organismal com- plexity: the meaning of haploid (n) and diploid (2n). Gametes are haploid - 23 chromosomes: the relationship between c and n as measures of genome size. somatic cells are diploid - 46 chromosomes. C = n: the proportion of the human genome that codes for protein. 8. 3a - chromosomes are the genetic units divided by mitosis. Most eukaryotes have two copies of each type of chromosome in their nuclei. Chromosome is said to be diploid (2n)
