Honors Bio Ch. 8 Cell Reproduction Prokaryotes

advertisement
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
Téléchargement