NATURAL SELECTION vs ARTIFICIAL
SELECTION
Using examples describe the processes of natural and artificial selection
and also highlight their differences.
Natural selection e.g. Giraffes
• Organisms of a particular species show a great deal of variation
• Some individuals may have favourable traits
• While others have unfavourable traits
• Selective pressure by environment due to competition
• Organisms with favourable traits survive and reproduce
• To pass this favourable traits to their offspring
• While those with unfavourable traits die out
• Over the time the whole population will have favourable traits
• And these organisms might develop phenotypically and
genotypically independently
• Into different species which cannot interbreed.
Artificial selection e.g. meat production
• Organisms of a particular species show a great deal of variation
• Humans select organisms with desired traits and interbreed them
• With other organisms that also have desirable traits
• To improve these traits further in offspring
• Organisms with deferent desired traits may be chosen
• To get offspring with combination of these desired traits
SELECTION
Using examples describe the processes of natural and artificial selection
and also highlight their differences.
Natural selection e.g. Giraffes
• Organisms of a particular species show a great deal of variation
• Some individuals may have favourable traits
• While others have unfavourable traits
• Selective pressure by environment due to competition
• Organisms with favourable traits survive and reproduce
• To pass this favourable traits to their offspring
• While those with unfavourable traits die out
• Over the time the whole population will have favourable traits
• And these organisms might develop phenotypically and
genotypically independently
• Into different species which cannot interbreed.
Artificial selection e.g. meat production
• Organisms of a particular species show a great deal of variation
• Humans select organisms with desired traits and interbreed them
• With other organisms that also have desirable traits
• To improve these traits further in offspring
• Organisms with deferent desired traits may be chosen
• To get offspring with combination of these desired traits
