1. genetics

1. study of heredity

2. cross-fertilization

 2. processs by which sperm from one flower's pollen fertilizes the egg in a flower of a different plant

3. hybrid

3. offspring of two different true-breeding varieties

4. monohybrid cross

4. mating of two organisms that differ in only one character

5. allele

5. alternative of a gene

6. homozygous

6. having identical alleles for a gene

7. heterozygous

7. having different alleles for a gene

8. dominant

8. descriptive of an allele in a heterozygous individual that appears to be only one affecting a trait

9. recessive

9. descriptive of an allele in a heterozygous individual that doesn't appear to affect a trait

10. Punnett square

10. diagram showing the probabilities of the possible outcomes of a genetic cross

11. phenotype

11. observeable traits of an organism

12. genotype

12. genetic makeup of an organism; an organism's combination of alleles

13. testcross

13. mating of an individual of unknown genotype but dominant phenotype with a homologus recessive individual

14. dihybrid cross

14. mating of two organisms that differ in two characters

15. trait

15. variation of a particular imherited character