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Genetics Crossword
Key Words
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Across: 3. A pair of alleles that carry two different forms of a characteristic, e.g. Hh 5. Chemical which makes up the genetic code (Made up of phosphate units, sugar units and 4 types of bases) 7. This is the actual appearance, e.g. round or wrinkled pea, resulting from the action of its genes 8. Fertilised ovum 9. Cell division which halves the double (diploid) number of chromosomes (46 for man) to the single (haploid) number (23 for man) 10. Sex cells, e.g. the sperm and the ovum (egg) 11. Genes that occupy the same position on homologous (similar) chromosomes 12. Thread like structure found in the nucleus of cells and containing genetic material
Down: 1. A gene that is "weaker" and only shows up if the dominant form is not present 2. A gene that is "stronger" than another allele and shows up if it is present 3. A pair of alleles that are the same, e.g. HH or hh 4. This is the actual pattern of alleles for a particular feature, e.g. rr, RR or Rr 6. Unit of hereditary material responsible for the inheritance of ONE factor 9. Usual process of cell division which results in new cells having the same chromosomes as the original cell
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