P1252109391qBgKZ

1
PCB 3063 General Genetics Lecture Topic 3
Chromosome Mechanics
2
Klug, Cummings, and Spencer, 8th ed.
3
Human Mitotic Chromosomes Figure 2-4 Klug,
Cummings, and Spencer, 8th edition
4
The Human Life Cycle
5
Mitosis of a Cell with a Diploid Number of 4 Fig.
2-8 Klug and Cummings, 7th edition

Similar to Fig. 2-7, 8th edition
6
MEIOSIS Diploid to haploid
state Single round replication followed by two
cell divisions Meiosis I and Meiosis II
7
The Stages of Meiotic Prophase I Fig. 2-13 Klug
and Cummings, 7th edition
Similar to Fig. 2-9 Klug, Cummings, and
Spencer, 8th edition
early prophase I
mid prophase I
late prophase I
8
The Synaptonemal Complex Fig. 2-14 Klug,
Cummings, and Spencer, 8th edition
9
Completion of Meiosis Fig. 2-14 Klug and
Cummings, 7th edition
Similar to Fig. 2-10 Klug, Cummings, and Spencer,
8th ed.
paired chromosomes lined up at metaphase plate
separation of homologues reductional division
products of meiosis I already haploid count
centromeres!
sister chromatids separate
4 haploid products
10
independent assortment
segregation
11
Gametogenesis Fig. 2-15 Klug and Cummings, 7th
edition
Similar to Fig. 2-11 Klug,
Cummings, and Spencer, 8th edition
diplonema of prophase I
ovulation penetration
12
A Homologous Pair of Lampbrush Chromosomes from
the Newt Alberts et al., Molecular Biology of the
Cell, 3rd edition