10.1 Meiosis

STEVE harton
Mind Map by STEVE harton, updated more than 1 year ago
STEVE harton
Created by STEVE harton over 5 years ago
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2 IB Biology 2 (10 Genetics and Evolution) Mind Map on 10.1 Meiosis, created by STEVE harton on 06/06/2014.
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10.1 Meiosis
1 NATURE OF SCIENCE
1.1 Careful observation and record keeping turned up anomalous data that Mendel's law of independent assortment could not account for
1.1.1 Thomas Hunt Morgan developed the notion of linked genes to account for the anomalies
2 CHROMOSOMES
2.1 Chromosomes replicate in interphase before meiosis
2.1.1 Independent assortment of genes is due to the random orientation of pairs of homologous chromosomes in meiosis I
2.1.1.1 Crossing over
2.1.1.1.1 Exchange of DNA material between non-sister homologous chromatids
2.1.1.1.2 Produces new combinations of alleles on the chromosomes of the haploid cells (n)
2.1.1.1.3 Chiasmata
2.1.1.1.3.1 Formation between non-sister chromatids can result in an exchange of alleles
2.1.1.1.3.2 Drawing diagrams to show chiasmata formed by crossing over
2.1.1.2 Homologous chromosomes separate in meiosis I
2.1.1.2.1 Sister chromatids separate in meiosis II
3 AIM 6
3.1 Staining o flily anthers or other tissue containing germ-line cells and microscope examination to observe cells in meiosis
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