Fig. 8-1, p.124

one chromosome (unduplicated) one chromosome (duplicated) one chromatid its sister chromatids Fig. 8-3, p.126

Table 8-1, p.126

Fig. 8-4, p.127

Fig. 8-5, p.128 Interval of cell growth before DNA replication (chromosomes unduplicated) G1 cytoplasmic division; each daughter cell enters interphase Interphase ends for parent cell Interval after DNA replication; the cell prepares to divide G2 Interval of cell growth when the DNA is replicated (all chromosomes duplicated) S

mitosis, cytoplasmic division One of the unduplicated chromosomes in a parent cell at interphase The same two chromosomes, (duplicated) at interphase, prior to mitosis Fig. 8-6b, p.129 After mitosis and cytoplasmic division, the two daughter cells each have one (unduplicated) chromosome. Both daughter cells start life in interphase.

microtubule of bipolar spindle p.129 chromosomes pole

Fig. 8-7a, p.130 a Cell at Interphase A diploid cell duplicates its DNA and prepares for mitosis.

Fig. 8-7c, p.130 pair of centrioles The duplicated chromosomes continue to condense. New microtubules move one of two pairs of centrioles to the opposite side of the nucleus. The nuclear envelope starts to break up. c Late Prophase

Fig. 8-7e, p.130 e Metaphase All of the chromosomes have become lined up midway between the spindle poles. At this stage of mitosis, the chromosomes are in their most tightly condensed form.

Fig. 8-7f, p.130 Sister chromatids separate as motor proteins moving along spindle microtubules drag them to opposite spindle poles. Other microtubules push the poles farther apart. f Anaphase

Fig. 8-7g, p.130 There are two clusters of chromosomes, which now decondense. Patches of new membrane fuse to form a new nuclear envelope. Mitosis is over. g Telophase

Fig. 8-7h, p.130 After cytoplasmic division, there are two daughter cells. Each is diploid: Its nucleus has two of each type of chromosome, just like the parent cell. h Two Daughter Cells at Interphase

Fig. 8-8a, p.132

Fig. 8-8a3, p The diameter of the contractile ring continues to shrink and pull the cell surface inward.

Fig. 8-8b, p.132

Fig. 8-9, p.133

Fig. 8-14, p.137 cell at interphase cytoplasm nucleus prophase telophase anaphasemetaphase