Download Life Test #5review sheet answers2010

Name _____________________ Date _________ Period ____
MRS. DERINGER’S Review Sheet ANSWER KEY :)
Test #5:Genetic Engineering, Selective Breeding, and Fruit Flies
1. replication - when DNA makes an exact copy of itself
2. genetic engineering - the transferring of genes from one organism to another.
it is used to make bacteria glow in the dark, tomatoes redder, fish grow bigger
etc.
3. How many chromosomes are in human body cells - 46
3a. How many chromosomes are in human sex cells - 23 (egg and sperm)
4. The difference between asexual and sexual reproduction in terms of passing on
traits a. in sexual reproduction HALF the traits are passed down to the offspring
b. in asexual reproduction ALL the traits are passed down to the offspring
5. Plasmid - a ring of DNA found in bacteria used to transfer genes into the
bacteria
6. The correct order of the fruit fly’s life cycle - Egg, Larva, Pupa, Adult
7. What does the fruit fly look like when it is a larva? What is it doing?
When it is a larva it looks like a white worm and it is eating a lot.
8. What does the fruit fly look like when it is a pupa? What is it doing?
When it is a pupa it is in a cocoon changing into an adult.
9. The differences between incomplete and complete metamorphosisIncomplete metamorphosis doesn’t include the pupa or cocoon stage.
10. The differences between male and female fruit fliesFemales are larger have more strips ( smarter LOL),
Males abdomens are solid, have less stripes, have sex combs, smaller
11. What bacterial transformation is used for
to transfer genes from one organism to bacteria. To make things like the protein
“insulin”.
12. What genetic engineering is used for
to transfer genes from one organism to another. For example to transfer a red
gene to a tomato to make it grow really red tomatoes. Look on my web page “
Selective breeding for other examples.
13. A cell that does not have a nucleus - bacteria
14. Paramecium reproduce through - asexual reproduction
15. The ratio of the number of sex cells to body cells - 1:2 example 23:46 The
number of sex cells is ALWAYS half the number of body cells
16. mutation - Any change in the order of DNA.
17. selective breeding- selecting two organisms of the same species to mate. For
example a labradoodle.
18. Examples of mutagens are Xrays, UV rays from the sun. pollution, smoking
19. zygote - The single cell of the fertilized egg.
20. offspring - The baby
21. Where are genes found? on Chromosomes inside the nucleus.
What do genes code for? proteins
22. What can abnormal cell division lead to cancer
23. The cell division of mitosis creates two cells that are exactly alike.
24. % of chromosomes given to offspring during sexual reproduction 50%
25. Three types of mutations are deletion, substitution, insertion.
26. Differences between selective breeding and genetic engineering. Selective
breeding any en can do, but you are uncertain of the outcome. For example: You
could mate a poodle and a labrador retriever and get a dog the size of a poodle
but with labrador retriever hair. OR You could mate a poodle and a labrador
retriever and get a dog the size of a labrador retriever but with poodle hair.
Genetic engineering is done i in a lab moving genes.