1. ________________________________ is known as the father of modern genetics.
 
2. A segment of DNA controlling a trait is called a ___________________________.
 
3. An __________________________ is any of several alternative forms of a gene.
 
4. A _______________________________ gene masks the effects of another gene.
 
5. A ____________________ trait is one for which the genes of the pair are identical.
 
6. A ____________________ trait is one for which the genes of the pair are different.
 
7. The genotype of an organism tells the _______________________ of the organism.
 
8. The phenotype of an organism tells the _____________________ of the organism.
 
9. A ____________________ is used to predict the possible offspring of a genetic cross.
 
10. A _______________________ traces a "history" of the traits of several generations.
 
11. Sex-linked traits are located on the ___________ chromosome.
 
12. The passing of traits from one generation to the next is called ________________.
 
13. __________________ is the application of molecular genetics for practical purposes.
 
14. A combination of DNA from two or more sources is _______________________ DNA.
 
15. Gregor Mendel did his work in genetics using _________________________ plants.
 
16. A colored circle or square on a pedigree chart means that person _____________________
 
17. A circle on a pedigree chart indicates the person is a ______________________________.
 
18. A half-colored circle or square on a pedigree chart indicates the person _________________.
 
19. Today, recombinant DNA allows human insulin to be produced by __________________ cells.
 
20. On a Punnett square, a recessive gene is represented by a ______________________ letter.