10117685
Description
Flashcards by Stacey Hollins, updated more than 1 year ago
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Created by Stacey Hollins
about 7 years ago
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| Question | Answer |
| -Mitosis is the division of the | Nucleus |
| How many and what types of cells are produced by mitosis? | 2 Diploid body cells |
| Are diploid cells identical? | yes |
| A ______ _______cell nucleus contains _____ chromosomes. | human skin 46 |
| After mitosis,___ skin cells would be produced, each with __ chromosomes inside its nucleus | 2 46 |
| A diploid (2n) cell has _____copies of each type of chromosome. | both |
| Meaning-Diploid cells contain _____ _____of the genetic material from the _______cell | ALL (100%) parent |
| Chromosomes contain _______. | DNA |
| Almost all cells have ________________, except ___________(sex cells: egg and sperm). | 46 chromosomes gametes (sex cells: egg and sperm) |
| If a cell has 46 chromosomes it is considered to be ____________. | diploid (2n) |
| If diploid (2n) has half the number of chromosomes it is ____________, these are found in the _____________. | haploid (n) gametes |
| A human has ______diploid (2n) cells and ______haploid (n) cells. | 46 23 |
| Females carry an ____ on their chromosomes, Males carry an _____ on their chromosomes. | XX XY |
| Meiosis is only for ___________ cells or gametes | reproductive (sex) |
| Nuclear division in which chromosome number is cut in half | (haploid=n) |
| THE PHASES OF MEIOSIS | Meiosis I Interphase I Prophase I Metaphase I Anaphase I Telophase I and Cytokinesis |
| Meiosis I | Prophase I, Metaphase I, Anaphase I and telophase I (Interphase) PII, MII, AII, TII (no interphase) |
| Interphase I | -chromosomes replicate/duplicate (contains 46 chromosomes) |
| Prophase I | -During synapses homologous chromosomes (same/identical) pair up. -Called a tetrad (4 chromosomes) -Crossing over occurs→gives genetic variation chromosomes line up side by side -Exchange DNA -Form new genes |
| Metaphase I | Tetrads line up in the middle of the cell (equator) |
| Anaphase I | -Chromosomes pulled to opposite sides of the cell -Notice that they are complete (in mitosis they are singles). |
| Telophase I and Cytokinesis | Each cell has a haploid set of chromosomes 2 haploid daughter cells form Cell will then go through the second Meiotic Stage (like mitosis divison now). |
| The second round of cell division _________ is identical to the phases of Mitosis except that they are happening in ___cells instead of 1 | Meiosis II 1 |
| At the end of Meiosis II, __haploid cells are formed from the 1 original parent cell. These haploid cells will become ________(a.k.a. sex cells) ______________ | 4 gametes eggs or sperm |
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