N5 3.6 Evolution of Species Flashcards

Front

Species

Back

A group of organisms that can interbreed to produce fertile offspring.

Front

Variation

Back

variation is the differences within a population.

Variation within a population makes it possible for a population to evolve over time in response to changing environment conditions.

Front

Mutation

Back

Spontaneous, random change to the genetic material (DNA) of an organism.

Front

DNA

Back

Genetic material found in the Nucleus

Front

Genes

Back

Sections of DNA which are found on chromosomes

contain the information for making a protein

Front

Alleles

Back

different versions of the same gene e.g. blue eyes and brown eyes.

Front

In a population, mutations are the only source of...

Back

New alleles

Front

Effects mutations can have on survival

Back

They can be neutral, advantageous, or disadvantageous.

Front

Advantageous mutations

Back

Increases an individual’s ability to survive and reproduce.

e.g. bacteria being resistant to antibiotics

Front

Disadvantageous mutations

Back

Decreases an individual’s ability to survive and reproduce.

e.g. disease