Variation Flashcards
What is the definition of variation?
Variation= differences between individuals belonging to the same species.
List three characteristics that come genetically.
Blood type
Eye colour
Inherited diseases
List a characteristics that come from enviroment.
A scar
List three characteristics that come genetically and enviroment.
Skin colour
Weight
Differences in a DNA of organisms within a species are called?
Genetic differences
What is the theory of natural selection?
Variation among individuals within a species is caused by differences in their genes
What can cause population to become extinct?
Rapid changes in the environment can cause a population to become extinct because the species cannot change over time.
What is bacteria?
Bacteria are small single celled organisms
Bacteria is almost found everywhere
Our human body is full of bacteria
What blood cells are attracted to bacteria?
The white blood cellsq
If somebody has an obesity gene, but they eat low-fat food what happens to them?
They maintain a healthy weight
What happens to someone if they have an an obesity, gene and eat fat food
They develop an unhealthy weight
