Mitosis & Meiosis
1. Copying DNA is known as ____________________.
2. The original cell that divides is called the _____________ cell, while the two, new identical cells are
called ______________ cells.
Chromosomes
3. Describe the chromosome of a prokaryote like a bacterial cell.
4. About how many chromosomes are in the body cell of eukaryotes?
5. How many chromosomes are in a human body cell?
6. Chromosomes can only be seen when a cell is __________________.
7. Uncoiled chromosomes are called ____________________.
8. What are duplicated (doubled) chromosomes called?
9. What holds sister chromatids together?
10. What is a karyotype?
11. What is the genotype for males?
For females?
Cell Reproduction
12. What is asexual reproduction?
13. What is sexual reproduction?
14. Which process produces identical new cells --- mitosis, meiosis, or both?
Cell Cycle
15. Name the 3 phases of the cell cycle.
16. What is the longest phase of the cell cycle?
17. What is the shortest phase of the shortest phase?
18. Which phase has 4 stages. Name them.
19. What happens during interphase?
Mitosis
20. What part of a cell actually divides during mitosis?
21. In which type of cell does mitosis occur --- prokaryote or eukaryote? Explain why.
22. Name a type of cell that doesn’t undergo mitosis.
23. Name, in order, the four stages of mitosis.
24. What happens to chromosomes during metaphase?
25. What happens to sister chromatids during anaphase?
26. What pulls sister chromatids apart during anaphase?
27. What reforms around each set of sister chromatids during telophase?
28. During telophase as the chromosomes uncoil, they reappear as ____________________.
29. What process or phase follows telophase?
30. What divides during cytokinesis?
31. Explain how cytokinesis occurs in plants (How is it different from animal cells?)
32. How does the chromosome number of the parent cell compare to that of the 2 daughter cells?
33. If the parent cell has a chromosome number of 2n = 6, what will be the chromosome number of the
daughter cells?
34. Eukaryotic cells before and after mitosis are ________________ or 2n.
35. What happens if mitosis is NOT controlled?
Meiosis
36. Do chromosomes replicate or double before meiosis?
37. How many divisions occur in meiosis? Is this the same as mitosis? Explain.
38. The original cell that divides by meiosis is ________________ or 2n.
39. How many daughter cells can be produced by meiosis? Is this the same as mitosis? Explain.
40. What is the chromosome number of the daughter cells produced by meiosis? How does this compare
to the number of chromosomes in the original cell?
41. What are the daughter cells called that are produced by meiosis? Name them.
42. In humans, how many chromosomes are in the original cell that undergoes meiosis?
43. After one division, how many chromosomes are in the cells?
44. After the second division, how many chromosomes are in the cells?
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Is meiosis sexual or asexual reproduction?
Are eggs & sperm haploid or diploid?
What process joins the egg & sperm to restore the original chromosome number of the organism?
When a sperm fertilizes an egg, a new 2n cell forms called the _____________________.
________________ are pairs of sister chromatids that have the same genes, but may have different
alleles.
_____________ reduces the chromosome number by half, while ____________ restores it.
In Meiosis I, what separates?
In Meiosis II, what separates?
Name these stages of Meiosis I.
54. Name 2 things that occur in Early Prophase I.
55. Name 3 things that happen in Late prophase I.
56. Label the centromere and put a box around a sister chromatid.
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Once tetrads form, what happens to the homologous chromosomes?
Crossing-over results in genetic ________________ in the offspring.
What happens during Metaphase I?
Name 2 things that occur in Anaphase I?
Name 3 things that occur in Telophase I?
At the beginning of Meiosis II, each cell has how many homologs of each chromosome?
Sister chromatids carry ____________ genetic information (same genes & same alleles).
The gametes at the end of Meiosis II will have how many copies of a gene for a trait?
Name the stages in Meiosis II.
What happens in Prophase II?
Where are the sister chromatids in Metaphase II?
What happens to the sister chromatids during Anaphase II?
Name 4 things that occur in Telophase II?
Meiosis results in __________ haploid cells called _________ that have _______ copy of each
chromosome and _________ allele for each gene in different ___________________.