Genetics Crossword

123456789101112131415161718192021
Across
  1. 4. The alleles are the same eg. BB or bb
  2. 5. An allele that is always expressed if it is present
  3. 7. Refers to the way in which characteristics are passed on from one generation to another
  4. 13. A feature of an organism that is passed on from one generation to another eg. hair colour, eye colour
  5. 14. A substance that can cause a mutation
  6. 15. Made up of DNA and contains genes
  7. 17. repeating unit found in DNA.
  8. 18. A change of a base of DNA
  9. 19. A,T,G,C in DNA, A,U,G,C in RNA
  10. 21. The alleles are different
Down
  1. 1. The difference in individuals within a population of the same species
  2. 2. Type of variation where traits can only take a limited number of categories (Eye colour, blood type). Plotted on a bar chart.
  3. 3. The trait that is expressed /shown.
  4. 6. A type of selection to breeding organisms for particular desirable characteristics that benefit humans
  5. 8. The part of the cell that contains genetic material. Controls the cells activity
  6. 9. Type of variation where traits can take any numerical value over a large range (height, mass). Plotted on line graph or histogram
  7. 10. An individual who does not have an inherited disease but has a single allele for the disease
  8. 11. The combination of alleles are present eg. BB or Bb or bb
  9. 12. Two copies of this allele must be present for it to be expressed
  10. 16. A section of DNA that codes for a trait/protein
  11. 20. An alternative form of a gene eg. B or b