Biology

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Across
  1. 4. first phase of mitosis.
  2. 11. cell or nucleus having a single set of unpaired chromosomes.
  3. 12. the region of a chromosome to which the microtubules of the spindle attach, via the kinetochore, during cell division.
  4. 15. a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
  5. 17. Double helix looking
  6. 19. the second stage of cell division
  7. 20. an organelle found in eukaryotic cells that is functioning like a brain.
  8. 21. phase of the cell cycle in which a typical cell spends most of its life.
  9. 22. haploid set of chromosomes in a gamete or microorganism
  10. 23. structural layer surrounding some types of cells
  11. 27. the death of cells which occurs as a normal and controlled part of an organism's growth or development.
  12. 28. sequence of DNA or RNA which codes for a molecule that has a function.
  13. 29. a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores.
Down
  1. 1. a mature haploid male or female germ cell.
  2. 2. cell or nucleus containing two complete sets of chromosomes, one from each parent.
  3. 3. one of several structures with specialized functions, suspended in the cytoplasm of a eukaryotic cell.
  4. 5. a test to identify and evaluate the size, shape, and number of chromosomes in a sample of body cells.
  5. 6. a thread-like structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
  6. 7. any cell of a living organism other than the reproductive cells.
  7. 8. the cellular lineage of a sexually reproducing organism from which eggs and sperm are derived
  8. 9. the basic structural, functional, and biological unit of all known living organisms.
  9. 10. form a protein structure that divides the genetic material in a cell
  10. 13. a unicellular organism that lacks a membrane-bound nucleus,
  11. 14. the final phase of cell division.
  12. 16. a variant form of a gene
  13. 18. each of a pair of minute cylindrical organelles near the nucleus in animal cells, involved in the development of spindle fibres in cell division.
  14. 24. any organism whose cells have a cell nucleus and other organelles enclosed within membranes.
  15. 25. can be distinguished from fats and carbohydrates by containing nitrogen.
  16. 26. complex molecular machine, found within all living cells