What is selective breeding? Warm-Up Questions 3/11 Write Question and Answer! What is selective breeding? What is an example of organisms that have been selectively bred?

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 3/11

Warm-Up Questions 3/12 Write Question and Answer! 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

What is the difference between hybridization and inbreeding? Use pages 88 – 89 in coach book to answer the following question Cool-down Questions 3/12 What is the difference between hybridization and inbreeding? Mule

Substitute today: Write warm-up question on board. Warm-Up Questions 3/13 Write Question and Answer! Substitute today: Write warm-up question on board.

Warm-Up Questions 3/14 Write Question and Answer! 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%

Write Question and Answer! Warm-Up Questions 3/15 Write Question and Answer! 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