Variation Flashcards
What is variation?
Small changes between organisms of the same species
What are the 2 types of variation?
Genetic variation
Environmental variation
All plants and animals have characteristics that are in some ways similar to who?
Their parents
Why are organisms characteristics similar to their parents?
Because the characteristics are determined by the genes which are inherited
How are the genes passed on?
By sex cells (gametes)
Which offspring develop
What is caused by the combining of genes from parents?
Genetic variation
What is genetic variation?
No two species are genetically identicak
What characteristics are only determined by genes?
Eye colour
Blood group
Inherited disorders
What do different genes cause?
Genetic variation
What are characteristics also influenced by?
The environment
What is environmental variation?
The environment that organisms live and grow in also cause differences between members of the same species
What is an environmental variation?
Any difference that has been caused by the conditions something lives in
What are some examples of characteristics which are determined by a mixture of genetic and environmental factors?
Body weight Height Skin colour Academic or athletic prowess Condition of teeth
