Across
- 5. Are undifferentiated biological cells that can differentiate into specialized cells and can divide to produce more stem cells.
- 6. each of the two threadlike strands into which a chromosome divides longitudinally during cell division. Each contains a double helix of DNA.
- 8. stage of meiotic or mitotic cll division in which the chromosomes move away from one another to opposite poles of the spindle.
- 9. the region of a chromosome to which the microtubules of the spindle attach, via the kinetochore, during cell division.
- 10. The final stage of meiosis or mitosis, in which the separated chromosomes reach the opposite poles of the dividing cell and the nuclei of the daughter cells form around the two sets of chromosomes.
- 12. the first stage of cell division, before metaphase, during which the chromosomes become visible as paired chromatids and the nuclear envelope disappears. The first prophase of meiosis includes the reduction division.
- 14. a structure in all living cells that consists of a single molecule of DNA bonded to various proteins and that carries the genes determining heredity.
- 15. is a type of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only.
- 16. the material of which the chromosomes of organisms other than bacteria are composed.
- 17. the cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.
Down
- 1. the process by which the nucleus divides in eukaryotic organisms, producing two new nuclei that are genetically identical to the nucleus of the parent cell.
- 2. the cycle of growth and asexual reproduction of a cell, consisting of interphase followed in actively dividing cells by prophase, metaphase, anaphase, and telophase.
- 3. the production of new living organisms by combining genetic information from two individuals of different types.
- 4. the second stage of cell division, between prophase and anaphase, during which the chromosomes become attached to the spindle fibers.
- 7. the resting phase between successive mitotic divisions of a cell, or between the first and second division of meiosis.
- 11. cancer cells behave as independent cells, growing without control to form
- 13. a minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division.
- 14. the division of a cell into two daughter cells with the same genetic material.
- 16. a disease caused by an uncontrolled division of abnormal cells in a part of the body.