Science

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Across
  1. 5. Starts at puberty continues until dearth produces 4 sperm per meiotic division occurs in the testes
  2. 6. thread like structures located inside the nucleus of animal and plant cells
  3. 10. The final stage of mitosis. The spindle fibers have pulled the chromatids to opposite ends (poles) of the cells. The spindle fibers dissolve and nuclear membranes reform. The cell elongater and prepares for cytokinesis
  4. 11. fertilization Occurs when sperm cells are deposited inside the female’s body eg most land animals like bird
  5. 13. a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix ;associated with the transformation of generic information
  6. 14. Spindle fibers contract and shorter, pulling the chromosomes apart into sister chromatids. Each chromatids gets pulled towards one end of cell
  7. 16. A type of cell division that results in two daughter cells. each having the same number and kind of chromosome as the parentious
  8. 18. the membrane-enclosed organelle within a cell that contains the chromosomes
  9. 20. cell the presence of two complete sets of chromosomes in an organisms’s calls, with each parent contributing a chromosome to each pair
  10. 21. A mixture offline DNA and proteins that from the chromosome found in the cells of humans and other high organisms
Down
  1. 1. the act of transferring pollen grains from the male anther of a flower to the female stigma
  2. 2. fertilization Occurs outside the body of either parent eg frogs fish etc
  3. 3. from a protein structure that divides the genetic material in a cell
  4. 4. Spindle fibers pull the X-shaped chromosomes into single line across the middle of the cell
  5. 7. egg production begins before birth
  6. 8. paired barrel shaped organelles located in the cytoplasm of animal cells near the nucleus envelope
  7. 9. A type of cell division that results in four daughter cells each with. half the number of chomosames of the parent cell
  8. 12. the presence of a single set of chromosomes in an organism’s cells
  9. 15. the first stage of cell divisian (before metaphase). During which the chromosomes become visible as paired chromatids and the nuclear envelope disappears.
  10. 17. cell It is Prokaryotic cell
  11. 19. The division of the cytoplasm that occurs after mitosis and the separation of chromosomes. It happens a lightly differently in plant and animal cells