11.4 wkbk 16-27 KEY 16. Prophase I 16. Metaphase I 16. Anaphase II 17. Interphase • Interphase (technically not part of meiosis, you’re right!) 17. Telophase II and Cytokinesis 18. The diagram shows Crossing over 19. It occurs during Prophase I of meiosis 20. The result is a new combination of alleles/genes (Differing chromosomes) MITOSIS MEIOSIS FORM OF REPRODUCTION ASEXUAL NUMBER OF DAUGHTER CELLS 2 SEXUAL (FIRST STAGE) 4 NO CHANGE (STAYS DIPLOID) HALVED OR CUT IN HALF (HAPLOID) NUMBER OF CELL DIVISIONS 1 2 DIFFERENCES IN ALLELES BETWEEN PARENT AND DAUGHTER CELLS DOESN’T CHANGE GENETICALLY DIFFERENT FROM PARENT CHANGE IN CHROMOSOME NUMBER 22. • A diploid cell that enters mitosis with 16 chromosomes will divide to produce __2__ daughter cells. Each of these daughter cells will have __16__ chromosomes. • *Remember, mitosis doesn’t change the daughter cells – they’re identical to parent 23. • If the diploid number of chromosomes for an organism is 16, each daughter cell after mitosis will contain __16__ chromosomes. 24. • A diploid cell that enters meiosis with 16 chromosomes will pass through __2__ cell divisions, producing __4__ daughter cells, each with __8__ chromosomes. • Diploid cell haploid cell • Double - half 25. • Gametes have a haploid number of chromosomes. • Half as many as a normal body cell • Ex: Humans have 46 chromosomes, except in gametes (sperm/egg) which have 23 (haploid) 26. • If an organism’s haploid number is 5, its diploid number is 10. • If given the haploid, double it • If given the diploid, halve it 27. • While a haploid number of chromosomes may be even or odd, a diploid number is always even.