Name __________________________
Date ____________________ Per ___
Advances in Genetics pp. 158 – 161
Selective Breeding
1. List the three methods that people have used to develop organisms with desirable traits.
a.
b.
c.
2. The process of selecting a few organisms with the desired traits to serve as parents of the next
generation is called __________________________________.
3. What is inbreeding? Be sure to answer in a complete sentence and be specific.
4. Is the following sentence true or false? If false, be sure to correct it. In hybridization, breeders cross
two individuals that are genetically identical.
5. When breeders cross two genetically different individuals to produce an organism with the best traits
from both parents, this breeding method is called _________________________.
Cloning
6. Circle the letter of each sentence that is true about cloning. You may have more than one answer.
a. A clone has exactly the same genes as the organism from which it was produced.
b. A cutting is one way to make a clone of an animal.
c. It’s easier to clone an animal than it is to clone a plant.
7. Is the following sentence true or false? If false, be sure to correct it. Cloning can be done only in
animals.
Genetic Engineering
8. In genetic engineering, genes from one organism are transferred into the _______________________
of another organism.
9. What is gene therapy?
10. Complete the flow chart on the next page about genetic engineering in bacteria.
Name __________________________
Date ____________________ Per ___
Genetic Engineering in Bacteria
Human DNA is spliced into the _______________________________, which is a small ring of DNA in
bacteria.
The _______________________________ takes up the plasmid. It now contains the human gene.
The bacterial cell reproduces the ____________________________ that the human gene codes for.