1. GENETICS REVIEW

2. A physical trait that shows as a result of an organism’s particular genotype. PHENOTYPE

3. An organism that has two different alleles for a trait. HETEROZYGOUS

4. The mathematical chance that an event will occur. PROBABILITY

5. Form of a trait that appears to overshadow or mask another form of the same trait. DOMINANT

6. A synonym for heterozygous. HYBRID

7. A characteristic of an organism controlled by a gene. TRAIT

8. Male sex cell. SPERM

9. Strands of DNA and protein found in the nucleus of a cell carrying the code for the characteristics of an organism. CHROMOSOME

10. A synonym for homozygous. PUREBRED

11. A tool for predicting possible traits in offspring. PUNNETT SQUARE

12. Occurrence of a trait that makes individuals different from members of the same species. VARIATION

13. Form of a trait that can disappear in a population but can reappear in future generations. RECESSIVE

14. Segment of DNA on a chromosome controlling the inheritance of traits. GENE

15. Female sex cell. EGG

16. The different forms a gene may have for a trait. ALLELE

17. An organism that has two identical alleles for a trait. HOMOZYGOUS

18. The genetic makeup of an organism for a trait; alleles in a gene pair. GENOTYPE

19. Pair of chromosomes containing alleles for the same traits. HOMOLOGOUS

20. The passing of traits from parent to offspring. HEREDITY

21. * Knowing the vocabulary is half the battle... You must also know how to apply the terminology in order to answer questions about the relationship between parents and their offspring.

22. GENETICS THE STUDY OF HEREDITY