Selective Breeding

• What characteristics do humans selectively breed for in plants?

  Better taste

  Increased yield 
• What type of variation can be passed on to the next generation?

  Genetic variation only
• What effect does selective breeding usually have on variation within a population?

  It decreases variation 
• What is the term used to describe all the genes and their alleles found in a population?

  Gene pool
• What is the term used to describe the breeding together of closely related individuals?

  Inbreeding 
• What are the drawbacks of inbreeding?

  The population as a whole will be more at risk of disease 

  It reduces that size of the gene pool 

  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?

  The cows that produce the most milk are selected...

  ... and bred together

  This process in then repeated with the offspring of those cows

  And again for multiple more generations