Selective Breeding
This lesson covers:
- How selective breeding works
- What selective breeding is used for
- The drawbacks of selective breeding
Which of these is a characteristic that humans have selectively bred for?
Wheat plants with smaller grains
Cows that produce less milk
Horses that can run faster
|
Which of the following characteristics do humans selectively breed for in plants?
(Select all that apply)
Decreased yield
Worse taste
Increased yield
Better taste
|
What type of variation can be passed on to the next generation?
Environmental variation only
Genetic variation only
Both genetic and environmental variation
|
What effect does selective breeding usually have on variation within a population?
It does affect variation
It increases variation
It decreases variation
|
What is the term used to describe all the genes and their alleles found in a population?
Gene pool
Inbreeding
Chromosome
Phenotype
|
What is the term used to describe the breeding together of closely related individuals?
Gene pool
Phenotype
Chromosome
Inbreeding
|
What are the drawbacks of inbreeding?
(Select all that apply)
We can select for advantageous traits
It reduces that size of the gene pool
The population as a whole will be more at risk of disease
Rare inherited diseases are more likely to appear
|
Describe how the process of selective breeding could be used to increase milk production in a population of cows.
|