Year 10 Genetics

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Across
  1. 4. a change in the DNA base sequence over time
  2. 5. a small section of a chromosome with a base sequence that codes for one characteristic
  3. 9. the allele combination for a certain gene
  4. 10. when two alleles for a gene are different
  5. 12. a change to the base sequence which can produce a new allele
  6. 13. a square table that allows geneticists to predict possibilities of genotypes and phenotypes in offspring
  7. 14. the physical expression of a gene
Down
  1. 1. a large section of DNA wound up tightly, containing many genes
  2. 2. an allele form that is only expressed in the phenotype when there is no dominant allele present
  3. 3. the molecule that carries the genetic information
  4. 6. a variant of a gene that codes for different versions of the same characteristic
  5. 7. an allele form that is always expressed in the phenotype when present
  6. 8. when two alleles for a gene are the same
  7. 11. differences in phenotypes (and therefore genotypes) in a species
  8. 13. a chart that shows prior generations and the inheritance of alleles through the generations