variation and continous and discontinous Flashcards
Define variation
They are the characteristics that defer between the same species and different species.
What are the 3 major types of variation
1- Genetic
2- Environmental
3- Both genetic and environmental
What do members of the population have
1- Different variations
2- Different DNA
The different version of genes are called …
alleles
Give examples of inherited variation
Blood types
Eye colour
Give examples of environmental variation
Hair length
Accent
Tattoos, piercings,scars
Give examples of variations caused by both inheritance and environmental
1- Weight
2- Height
3- Skin colour
What do alleles give us different
characteristics
What are the 2 types of variation
1-Intraspecific variation
2- Interspecific variation
Define intraspecific variation
Variations within species
Define interspecific variation
Variations between species
Give 1 example of intraspecific variation
Hair length of different dogs
Give 1 example of interspecific variation
Hair length of different mammals
What are inherited characteristics
They are passed down from our parents. We are born with them and they are found in our genes with are part of the DNA found in the nucleus of our cells.
True or false
We get half our characteristics from our dad and the other half from our mother
What are enviromental charesterstics
They are the charecteristics that are detremined by how we love and the action we do.
What is the other classification for different types of variation
1- Continuous and discontinuous
Give the 5 features of discontinuous variation
1- Caused by genes only
2- Always a bar chart ( with gaps in between the bars)
3- Doesn’t include numbers ( qualitative)
4- Can only be of few groups: Males and females
5- Examples: Eye colour and Blood group
Give the 6 features of continuous variation
1- Include numbers ( quantitative)
2- Vary in range : 150.1,150.2 , etc…
3-Always a histogram ( the line goes through the middle with no gaps)
4- Don’t start from 0.
5- Caused by genes and environment.
6- Height in cm/ Weight in K.G
Draw a rough sketch of how discontinuous and continuous data should look like
(check)
1- Continous should have gaps between the bars
2- Discontinous should have no gaps, a histogram connecting to the half and not start with 0
True or false
Eye colour is an example of continuous variation:
Continuous variation is caused by genes only:
Continuous variation is drawn using a histogram:
Continuous variation is quantitative:
Discontinuous variation is caused by genes and the environment:
Height is an example of discontinuous variation:
Discontinuous variation is drawn on a bar chart:
Eye colour is an example of continuous variation: False
Continuous variation is caused by genes only: False
Continuous variation is drawn using a histogram: True
Continuous variation is quantitative: True
Discontinuous variation is caused by genes and the environment: False
Height is an example of discontinuous variation: False
Discontinuous variation is drawn on a bar chart: True
