Biology Quiz

4. a mature sexual reproductive cell, as a sperm or egg, that unites with another cell to form a new organism.
6. the interchange of corresponding chromatid segments of homologous chromosomes with their linked genes.
7. pertaining to a single set of chromosomes.
12. any of several forms of a gene, usually arising through mutation, that are responsible for hereditary variation.
14. when two or more characteristics are inherited, individual hereditary factors assort independently during gamete production, giving different traits an equal opportunity of occurring together.
16. the relative frequency with which an event occurs or is likely to occur.
17. the offspring of two animals or plants of different breeds, varieties, species, or genera, especially as produced through human manipulation for specific genetic characteristics.
18. having the same alleles or genes in the same order of arrangement.

1. the basic physical unit of heredity.
2. the separation at meiosis of the two members of any pair of alleles into separate gametes.
3. the cell produced by the union of two gametes, before it undergoes cleavage.
5. The Principle of Dominance states that some alleles are dominant and some alleles are recessive.
8. fecundation or impregnation of animals or plants
9. having two similar complements of chromosomes.
10. a group of four chromatids formed by synapsis at the beginning of meiosis.
11. having two different alleles for a single trait.
13. having identical pairs of genes for any given pair of hereditary characteristics.
15. a distinguishing characteristic or quality, especially of one's personal nature.