Biology Ev4 Crossword

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Across
  1. 2. An organism that has two different alleles for a gene.
  2. 6. It is when in cell regulation cells stop dividing to specialize in structure and function.
  3. 8. the process in which haploid gametes are formed in diploid organisms.
  4. 12. Division of the genetic material in the nucleus.
  5. 14. Phase in mitosis and meiosis in which nuclear envelope re-forms
  6. 16. is a small collection of genetic code, either DNA or RNA, surrounded by a protein coat.
  7. 19. variations in the nucleotide sequence of a genome, can also occur because of damage to DNA.
  8. 20. cells of the human body that are made through the process of meiosis.
  9. 21. Term that refers to the presence of two complete sets of chromosomes in an organism's cells, with each parent contributing a chromosome to each pair.
Down
  1. 1. An organism’s appearance or observable traits.
  2. 3. Is the genetic makeup of an organism.
  3. 4. It’s the study of heredity.
  4. 5. Phase in mitosis and meiosis in which each chromosome is connected to a spindle fiber
  5. 7. Organisms that viruses need to be able to replicate by infecting it.
  6. 9. Fase in which cells undergo a round of DNA replication in both meiosis and mitosis.
  7. 10. Phase in mitosis and meiosis in which the nucleolus disappears and the nuclear envelope breaks down
  8. 11. specific mechanisms by which characteristics or traits are passed from one generation to the next via genes.
  9. 13. The programmed death of a cell.
  10. 15. Phase in mitosis in which sister chromatids separate into individual chromosomes
  11. 17. An organism that has a pair of identical alleles for a character.
  12. 18. Term that refers to the presence of a single set of chromosomes in an organism's cells.