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 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 ASEXUAL SEXUAL (FIRST STAGE) 2 4 FORM OF REPRODUCTION ASEXUAL SEXUAL (FIRST STAGE) NUMBER OF DAUGHTER CELLS 2 4 CHANGE IN CHROMOSOME NUMBER NO CHANGE (STAYS DIPLOID) HALVED OR CUT IN HALF (HAPLOID) NUMBER OF CELL DIVISIONS 1 DIFFERENCES IN ALLELES BETWEEN PARENT AND DAUGHTER CELLS DOESN’T CHANGE GENETICALLY DIFFERENT FROM PARENT

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.