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Communicate about continuous variation and discontinuous variation
Variation
5.5
Variation
Type of variation
Continuous
Discontinuous
Variation with intermediate
Characteristic can be measured
Can be represented in histogram or normal distribution curve
Determined by environment factors and genetic factors
Examples: Height
Variation without intermediate
Characteristic cannot be measured
Can be represented in bar graph
Determined by genetic factors
Example: Ability to roll tongue
Factors that cause variation
Genetic Factor
Environmental Factor
Crossing over between homologous chromosomes during meiosis
Independent assortment of chromosomes
Random fertilisation between gamates
Chromosome and gene mutation
pH
Sunlight
Temperature
Water
Climate
Nutrition
Importance of variation
Enables the organisms to adapt themselves to their environment
Enables us to easily differentiate and recognise each individual
Allows natural selection
Helps organisms to camouflage to protect themselves from predators
Variation
5.5
Variation
Type of variation
Continuous
Discontinuous
Variation with intermediate
Characteristic can be measured
Can be represented in histogram or normal distribution curve
Determined by environment factors and genetic factors
Examples: Height
Variation without intermediate
Characteristic cannot be measured
Can be represented in bar graph
Determined by genetic factors
Example: Ability to roll tongue
Factors that cause variation
Genetic Factor
Environmental Factor
Crossing over between homologous chromosomes during meiosis
Independent assortment of chromosomes
Random fertilisation between gamates
Chromosome and gene mutation
pH
Sunlight
Temperature
Water
Climate
Nutrition
Importance of variation
Enables the organisms to adapt themselves to their environment
Enables us to easily differentiate and recognise each individual
Allows natural selection
Helps organisms to camouflage to protect themselves from predators
Chapter : Genetics
Topic : Communicate about continuous variation and discontinuous variation
Form 4
Science
View all notes for Science Form 4
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