A trait that helps an organism survive and reproduce.
100
What are homologous structures?
Similar structures that related species have inherited from a common ancestor.
100
Any example of fossil as an evidence of evolution?
Evolution of Horse
100
What is evolution?
genetic and environmental changes over time.
200
What is natural selection?
The process by which individuals that are better adapted to their environment are more likely to survive and reproduce than other members of the same species
200
What is Darwin's Birth place?
England
200
What is a fossil?
any remain or trace of ancient life
200
The study of organisms by their fossil remains is called .......
palaeontology
200
What are the two key changes occur during evolution?
Genetic variation and natural selection
300
What are variations?
Differences between individuals of the same species.
300
is also called migration
Gene flow
300
Natural selection is often called.......
"survival of the fittest"
300
what is a mould?
A rock with hollow impression
300
study of early stages of development is called.........
embryology
400
What is a competition?
a growing population fight for limited resources
400
What is a mutation?
changes in DNA sequences
400
What is the major difference that Darwin noticed among the finches?
beak structure (size and shape)
400
A Frozen or mummified organism is.......
whole organism fosssil
400
what are the two important evolutionary changes in mimic octopus?
Colour and structural changes
500
The four major factors that cause natural selection....
are inherited variations, overproduction, competition and survival
500
Three factors that produce variations in a species are.....
mutations, gene flow and recombination
500
What are four types of evidence that support the theory of evolution?
Fossils, comparative anatomy, embryology and comparative biochemistry
500
what is petrified organism?
The organic material of living things that has been replaced by minerals
500
What are vestigial structures?
Reduced structures because they are no longer in use