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