1. What is selective breeding?
Warm-Up Questions 3/11
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What is selective breeding?
What is an example of organisms that have been selectively bred?

2. Excessive inbreeding among cheetahs has resulted in a higher death rate among the cheetah population. WHY IS THIS TRUE?
Inbreeding decreases genetic variation
Inbreeding produces the worst traits
Inbreeding increases genetic variation
Inbreeding produces more organisms than other breeding methods
Cool-down Questions /11

3. Warm-Up Questions 3/12
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The domestic dog was developed through inbreeding from wolves. How might this process occur?
People changed the genetic material in wolves
People eliminated aggressive wolves through hunting
People bred wolves with animals from similar species
People bred wolves with mild tempers over many generations

4. What is the difference between hybridization and inbreeding?
Use pages 88 – 89 in coach book to answer the following question
Cool-down Questions /12
What is the difference between hybridization and inbreeding?
Mule

5. Substitute today: Write warm-up question on board.
Warm-Up Questions 3/13
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Substitute today: Write warm-up question on board.

6. Warm-Up Questions 3/14
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A scientist crossed a tall pea plant with a short pea plant. Out of the offspring, 39 plants were tall and 13 were short.
1. What is the phenotypic ratio?
4:0
2:2
3:1
2. What percentage describes the short plants?
a. 100% b. 75% c. 25% d. 50%

7. Write Question and Answer!
Warm-Up Questions 3/15
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1. Some genetic disorders, such as sickle cell anemia or Tay Sachs, are due to
a ribosome. c. a DNA fingerprint.
a mutation. d. genetic engineering.
2. When a dairy farmer chooses a specific bull to mate with her cows in order to produce calves that will grow up to produce more milk, this process is called
a. genetic typing c. genetic counseling
b. selective breeding d. regeneration