Genetics

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Across
  1. 3. two alleles each of a different type
  2. 5. describes two identical copies of alleles in the DNA gene sequence
  3. 7. a gene whose effects are masked in the presence of a dominant gene
  4. 8. is one of two or more versions of a gene
Down
  1. 1. the set of observable characteristics or traits of an organism
  2. 2. a single gene or set of genes for a trait or set of traits
  3. 4. a gene that is expressed in an organism's phenotype masking the effect of the recessive allele or gene
  4. 6. a unit of heredity which is transferred from a parent to offspring and is held to determine some characteristic of the offspring