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KolarChap3part2
meiosis-mitosis2
| Question | Answer |
|---|---|
| microtubules and fibers that radiate out from the centrioles | spindle fibres |
| the only cells that can undergo meiosis-found in the ovaries of females and the testes of males | germ cell or gametes |
| the phase of a cell's life cycle between the reproductive stages of mitosis. DNA replication occurs during this phase. Most cells spend about 95% of their life in this phase | interphase |
| distinct wormlike structures formed from chromatin during cell reproduction | chromosomes |
| microtubules visible during cell division that are involved in separating the chromosomes into two separate, yet identical groups. | asters |
| body cells; cells other than gamete cells | somatic cells |
| the duplication and division of the chromosomes and nucleus during cell reproduction | mitosis |
| reproduction involving one parent | asexual reproduction |
| cytoplasmic division that follows division of the nucleus | cytokinesis |
| one of the two strands that make up chromosomes, seen in prophase and metaphase, that have duplicated their DNA during interphase. During anaphase, these separate to form daughter chromosomes. | chromatid |
| the process of doubling the DNA that occurs before mitosis | DNA replication |
| an exchange of chromosomal material between homologous pairs that occurs during prophase one of meiosis | crossing over |
| the first stage of mitosis when chromosomes form from chromatin and the nuclear membrane is absorbed into the cell | prophase |
| the stage of mitosis where duplicated chromosomes line up along the centre of the mitotic spindle | metaphase |
| the actual number of different types of chromosomes a cell possesses (somatic cell) | diploid |
| in animal cells, a cytoplasmic organelle that organizes the mitotic spindle fibres during cell reproduction | centriole |
| having two of each chromosome. humans have 23 different chromosomes, yet in each body cell, these chromosomes occur in twos called homologous pairs. For this reason, each body cell possesses this number of chromosomes (46) | meiosis |