Across
- 4. the organelle within a cell that contains DNA
- 8. forms the basic structural unit of DNA. Composed of sugar, a phosphate and a base.
- 10. both alleles are the same eg. BB
- 11. Inherited in families eg. medical conditions
- 12. organism has the exact same trait eg for homozygous the trait so either pp or PP
- 13. a section of DNA that codes for a specific trait
- 14. thread-like structure of nucleic acid and protein found in the nucleus of most living cells.
Down
- 1. unknown individual crossed with homozygous recessive to find genotype.
- 2. alleles are different eg. Bb
- 3. an allele which is only expressed even if only if one is present eg BB
- 5. an alternate version of a gene can be dominant or recessive
- 6. only be expressed if there are no dominant alleles present eg. bb
- 7. the appearance eg. colour
- 9. large biologically important polymer comprised of sequences of amino acid.
- 13. the specific alleles that occur in an organism eg. Bb,BB,bb