Meiosis IMeiosis I
• Interphase IInterphase I• Prophase IProphase I• Metaphase IMetaphase I• Anaphase IAnaphase I• Telophase ITelophase I
Meiosis IIMeiosis II
• Interphase IIInterphase II• Prophase IIProphase II• Metaphase IIMetaphase II• Anaphase IIAnaphase II• Telophase IITelophase II
Prophase I: (1)The duplicated chromosomes Prophase I: (1)The duplicated chromosomes condense and become visible. condense and become visible. (2) Spindle forms.(2) Spindle forms.
(3) The nucleolus disperses(3) The nucleolus disperses(4) The nuclear membrane disperses(4) The nuclear membrane disperses
Metaphase IMetaphase IPaired homologous chromosomes align Paired homologous chromosomes align
at the metaphase plateat the metaphase plate
Anaphase IAnaphase IThe homologues separate from each other, but sister The homologues separate from each other, but sister
chromatids remain linked at their centromereschromatids remain linked at their centromeres
Telophase I: Cytokinesis that follows produces 2 Telophase I: Cytokinesis that follows produces 2 daughter cells, each has 2 chromosomes consisting daughter cells, each has 2 chromosomes consisting of 2 sister chromatidsof 2 sister chromatids
Question 1Question 1
Homologous chromosomesHomologous chromosomes
A.A. Pair up during meiosis Pair up during meiosis
B.B. Are in pairs, one chromosome of each pair Are in pairs, one chromosome of each pair comes from the father and one from the comes from the father and one from the mothermother
C.C. May exchange parts during meiosisMay exchange parts during meiosis
D.D. All the aboveAll the above
Questions 2 & 3 True/FalseQuestions 2 & 3 True/False
• Question 2: Asexual reproduction produces Question 2: Asexual reproduction produces variationsvariations
• Question 3: Sexual reproduction produces Question 3: Sexual reproduction produces variationsvariations