Term
| where are the checkpoints? |
|
Definition
|
|
Term
| dna synthesis during which phase |
|
Definition
|
|
Term
|
Definition
| N = diploid or haploid, C = number of chromatids |
|
|
Term
| when does mtoc split and move to opposite ends of cell |
|
Definition
|
|
Term
| _ forms between centromeres |
|
Definition
|
|
Term
|
Definition
| nuclear envelope disrupted, nucleolus disappears, kinetochores assemble at centromeres. kinetochore MTs, polar MTs and astal MTs differentiate |
|
|
Term
| when are chromosomes maximally condensed |
|
Definition
|
|
Term
| when do nuclear envelope and nucleolus come back? what else happens? |
|
Definition
| telophase. chromatids decondense, kinetochore MTs disappear |
|
|
Term
| actin/myosin do what where |
|
Definition
| form contractile ring during cytokinesis (mitosis) at cleavage furrow |
|
|
Term
|
Definition
| homologous chromosomes segregate to daughter cells |
|
|
Term
|
Definition
| chromatids from each chromosome segregate to daughter cells |
|
|
Term
| one diploid germ cell produces |
|
Definition
| 4 haploid gametes. (meiosis only occurs in germ cells) |
|
|
Term
| when does crossover happen? |
|
Definition
|
|
Term
|
Definition
| leptotene, zygotene, pachytene, diplotene, diakinesis |
|
|
Term
|
Definition
|
|
Term
|
Definition
| thin threads, condensing begins, chromatids of individual chromosomes can't be distinguished |
|
|
Term
|
Definition
| SYNAPSIS: homologous chromosomes pair closely along the length (only in meiosis I). chromosomes are held together by synaptonemal complex, which is essential for recombination |
|
|
Term
|
Definition
| condensation continues. synapsis is complete (tetrads). crossing over happens. |
|
|
Term
|
Definition
| synaptonemal complex disappears (after recombination). tetrad begins to split, but centromeres remain intact |
|
|
Term
|
Definition
| where chromatids are held together (at the centromere). the supposed location of crossovers. |
|
|
Term
| t/f dna replicates twice during meiosis |
|
Definition
| false. only before meiosis i. |
|
|
Term
| meiosis yields what in men and women |
|
Definition
| men - 4 spermatids. women - one ovum and 3 polar bodies. |
|
|
Term
| most error producing stage of meiosis |
|
Definition
|
|
Term
|
Definition
| associated with female meiosis |
|
|
