biology

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Across
  1. 3. The passing of traits from parents to offspring.
  2. 6. An organism that has two different alleles for a trait.
  3. 8. The offspring of many generations that have the same traits.
  4. 11. Having two different alleles for a trait.
  5. 13. The scientific study of heredity.
  6. 14. An organism's physical appearance or visible traits.
  7. 15. A characteristic that an organism can pass to offspring through genes.
Down
  1. 1. Square A chart that shows the possible combinations of alleles that result from a genetic cross.
  2. 2. The set of information that controls a trait; code in the DNA.
  3. 4. An allele whose trait always shows up in the organism when it is present.
  4. 5. The different forms of a gene.
  5. 7. An allele that is masked when a dominant allele is present.
  6. 9. A number that describes how likely it is that an event will occur.
  7. 10. A condition in which the two alleles of a gene are neither dominant nor recessive.
  8. 11. Having two identical alleles for a trait.
  9. 12. An organism's genetic makeup or allele combinations.