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19th Biology Miiosis
Jorge Miosis Review
| Question | Answer |
|---|---|
| The 23rd pair of chromosomes that is different in males and females are called ______________ | sex chromosomes |
| Human males have | one X and one Y chromosomes |
| The gamete that contains genes contributed only by the mother is ______ | an egg |
| Gametes are always _________ | haploid |
| Cells containing two complete sets of chromosomes are considered _________ | diploid |
| What structure do spindle fibers come from? | centrioles |
| Crossing over occurs after what phase in meiosis. | Prophase 1 |
| The male and female sex cells are called | gametes |
| A fertilized zygote is made when | two gametes join together |
| At the end of meoiosis, ____________ daughter cells are created. | 4 haploid |
| Nuclear membranes disappear; homologous chromosomes pair up and form a tetrad. | Prophase 1 |
| Homologous chromosomes pairs get separated and pulled to opposite sides. | Anaphase 1 |
| Four new nuclear membranes begin to reform | Telophase 2 |
| Chromosomes line up along the middle, they are not in homologous pairs | Metaphase 2 |
| Sister chromatids separate to opposite sides | Anaphase 2 |
| Chromosomes line up along the middle. | Metaphase 1 |
| Cytoplasm divides, 2 daughter cells are formed | Cytokinesis 1 |
| Two new nuclear membranes begin to reform | Telophase 1 |
| Nuclear membranes disappear; chromosomes come together but no tetrad is formed | Prophase 2 |
| Cytoplasm divides, 4 daughter cells are formed | Cytokinesis 2 |