Honors Bio Ch. 8 Cell Reproduction Prokaryotes

Honors Bio Ch. 8 Cell Reproduction
Prokaryotes - Binary fission Eukaryotes
DNA condensing/packing Cell Cycle
Interphase – normal cell life
M phase – cell divides
Mitosis
Cytokinesis
DNA Replication

Mitosis
Cytokinesis
Cell Cycle Controls Cancer – uncontrolled cell division
benign
malignant
metastatic

Sexual Reproduction: Meiosis
Homologous pairs
Diploid
Haploid
Meiosis – reduces chromosomes by ½ Synapsis
Homologous pairs meet
Crossing-over
Independent Assortment

Meiosis I – first division separates homologous pairs (diploid  haploid)
Meiosis II – second division separates sister chromatids
haploid (2 copies)  haploid (1 copy)
Compare mitosis and meiosis

Meiosis - makes gametes Fertilization – haploid  diploid
Nondisjunction – chromosomes do not separate correctly
Karyotype Chromosome mutations