Estimating the Time Needed for Mitosis

The Eukaryotic Cell Cycle Interphase G1 (growth phase 1) S (synthesis phase – DNA replication) G2 (growth phase 2) Mitosis Prophase Metaphase Anaphase Telophase

DNA Replication FIGURE 11-5 Principal features of a eukaryotic chromosome 3

Homologous Pairs of Chromosomes in DIPLOID Human Karyotype FIGURE 11-9 The karyotype of a human male Staining and photographing the entire set of duplicated chromosomes within a single cell produces a karyotype. Pictures of the individual chromosomes are cut out and arranged in descending order of size. The chromosome pairs (homologues) are similar in both size and staining pattern and have similar genetic material. Chromosomes 1 through 22 are the autosomes; the X and Y chromosomes are the sex chromosomes. Notice that the Y chromosome is much smaller than the X chromosome. If this were a female karyotype, it would have two X chromosomes. Homologous Pairs of Chromosomes in DIPLOID Human Karyotype 4

Mitotic Cell Division (Mitosis) used in asexual reproduction used in growth of fertilized egg (zygote) into adult used for growth and development creates daughter cells with the same chromosome number as the mother cell

FIGURE 11-10a Mitotic cell division in an animal cell 6

FIGURE 11-10b Mitotic cell division in an animal cell 7

FIGURE 11-10c Mitotic cell division in an animal cell 8

FIGURE 11-10d Mitotic cell division in an animal cell 9

FIGURE 11-10e Mitotic cell division in an animal cell

FIGURE 11-10f Mitotic cell division in an animal cell

Cytokinesis FIGURE 11-12 (part 3) Cytokinesis in a plant cell 12

The Eukaryotic Cell Cycle FIGURE 11-3 The eukaryotic cell cycle The eukaryotic cell cycle consists of interphase and mitotic cell division. Some cells enter the G0 phase and may not divide again. The Eukaryotic Cell Cycle 13