Question

15 most domesticated animals have been bred for specific, favorable traits. dairy cows are bred for maximum milk production while dogs are bred for size and color, among other characteristics. the process of humans controlling the breeding of organisms is known as - a natural selection b selective breeding c manipulative reproduction d sheltered breeding 16 which of the following is not an advantage of selective breeding? a maintains certain stable traits to pass down to the offspring b traits help the animal prosper in confinement c breeding for only one trait can cause problems in other traits d makes the species stronger 17 drawings from hundreds of years ago show horses that are much smaller than horses today. which of the following is the best explanation for the increased size of horses a horses have been genetically engineered b selective breeding has made horses larger c genetic therapies have been used to make horses larger d certain sex - linked genes have been lost

Explanation:

Question 15

• Natural selection is a natural process where organisms better adapted to their environment survive and reproduce more. It is not human - controlled.
• Selective breeding is the process where humans control the breeding of organisms to get specific traits. For example, breeding dairy cows for milk production.
• Manipulative reproduction is not a standard term for this process.
• Sheltered breeding is not the correct term for the described human - controlled breeding.

• Option A: Selective breeding can maintain certain stable traits to pass down to offspring. For example, breeding for a particular coat color in dogs.
• Option B: Traits can be bred to help animals prosper in confinement. For instance, breeding chickens that are more docile in a coop.
• Option C: Breeding for only one trait causing problems in other traits is a disadvantage of selective breeding. It is not an advantage.
• Option D: Selective breeding can make the species stronger. For example, breeding stronger - muscled cattle.

• Option A: Genetic engineering is a relatively new technology. Horses were not genetically engineered hundreds of years ago.
• Option B: Selective breeding (humans choosing which horses to breed based on size) can lead to an increase in size over generations.
• Option C: Genetic therapies are modern techniques. They were not used hundreds of years ago.
• Option D: There is no indication that sex - linked genes being lost would cause an increase in size.

Answer:

B. selective breeding

Question 16