Cells reproduction

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Across
  1. 3. Cells that have only one set of chromosomes, like gametes (sperm or egg cells).
  2. 5. A change or mistake in the DNA that can sometimes lead to differences in how the body works or looks.
  3. 9. When a cell splits into two, making more cells to grow, heal, or reproduce.
  4. 12. The second step in cell division, where the chromosomes line up in the middle of the cell.
  5. 13. Chromosomes that are similar in shape and size, one from each parent, working together.
  6. 15. A special structure that helps move the chromosomes during cell division.
  7. 17. The time when a cell is not dividing but is growing, making copies of its DNA, and getting ready to divide.
  8. 20. A fertilized egg, which is the first cell that forms when a sperm and egg combine.
  9. 21. A special molecule in cells that holds the instructions for how your body works and looks.
  10. 22. The final step where the cell completely divides into two separate cells.
  11. 23. The part of a chromosome that holds the two parts (called chromatids) together.
  12. 24. The first step in cell division, where the chromosomes get ready and the nucleus starts to break down.
Down
  1. 1. When a chromosome is copied, each half is called a chromatid, and they're stuck together until the cell divides.
  2. 2. Tiny, thread-like structures inside a cell that carry genetic information, like blueprints for the body.
  3. 4. Differences or changes that make each living thing unique, like how no two people look exactly the same!
  4. 6. The fourth step in cell division, where the cell starts to split and two new nuclei are formed.
  5. 7. Cells that have two sets of chromosomes, one from each parent.
  6. 8. The third step in cell division, where the chromosomes are pulled apart to opposite sides of the cell.
  7. 10. The smallest building block of all living things. It’s like a tiny room where life happens.
  8. 11. A process during cell division where chromosomes mix and match parts, making unique combinations.
  9. 14. Normal body cells, like skin or muscle cells, that don’t help with reproduction.
  10. 15. These are two identical copies of something, like sister chromatids in a cell.
  11. 16. This word is related to your genes, the tiny instructions in your cells that decide things like your eye color or height.
  12. 18. The “control center” of the cell that holds the chromosomes and gives orders to the cell.
  13. 19. Special cells (like sperm and eggs) that combine during reproduction to make a new living thing.