Across
- 4. The visible physical trait or characteristic of an organism.
- 5. Different forms of the same gene that control the same trait, with one inherited from each parent.
- 8. The exchange of genetic material between chromosomes during meiosis that creates new gene combinations.
- 9. An allele that is always expressed when present and masks the effect of a recessive allele.
- 10. The offspring of two genetically different parents.
Down
- 1. A long, coiled strand of DNA that contains many genes and is found in the nucleus of a cell.
- 2. An allele that is only expressed when two copies are present.
- 3. The genetic makeup of an organism, showing the alleles it has for a trait.
- 6. A person who has a recessive allele but does not show the trait and can pass it to children.
- 7. A section of DNA that contains instructions for a specific trait or protein.