Across
- 2. union of a sperm nucleus, of paternal origin, with an egg nucleus, of maternal origin, to form the primary nucleus of an embryo.
- 4. A change in the usual DNA sequence at a particular gene locus.
- 5. The presence of two identical alleles at a particular gene locus
- 6. type of cell division that creates egg and sperm cells
- 9. variations of a gene that can result in different traits in living things.
- 13. the process by which a less specialized cell becomes a more specialized cell type
- 16. structures found in the center (nucleus) of cells that carry long pieces of DNA.
- 17. molecule inside cells that contains the genetic information responsible for the development and function of an organism.
- 18. a type of inheritance in which two versions (alleles) of the same gene are expressed separately to yield different traits in an individual.
- 19. A molecule made up of amino acids.
- 20. The observable characteristics in an individual resulting from the expression of genes
Down
- 1. RNA is converted (or "translated") into a sequence of amino acids that makes up the protein.
- 3. both alleles of a gene at a locus are partially expressed, often resulting in an intermediate or different phenotype
- 7. a biological catalyst and is almost always a protein
- 8. the presence of a single set of chromosomes in an organism's cells
- 10. a gene whose effects are masked in the presence of a dominant gene
- 11. a nucleic acid present in all living cells that has structural similarities to DNA
- 12. A cell containing two copies of each chromosome
- 14. the process by which a cell makes an RNA copy of a piece of DNA
- 15. the inheritance of traits that are typically passed vertically from parent to child where both the parent and the child are affected by the trait or disorder that is related to that gene.