Evolution by Natural Selection Flashcards
What are endemic species?
Species that are not found anywhere else.
How many different species of the finches were discovered?
14 species
What are niches?
Position of role taken by an organism within its community.
What is speciation?
long-term isolation
Why are some animals similar to each other when they are found in such different places?
Continental drift or pangaea
What are the two main ideas in the book On the Origin of Species?
Decent with modification and natural selection
What is decent with modification also known as?
Evolution
What is natural selection?
Environment or nature selects for which traits are advantageous
What are required in natural selection?
Traits must have variation and variation must be heritable.
True or False. Natural selection is a random process.
False.
Who was Darwin’s competition?
Alfred Russel Wallace
What is an ancestral organism shared by two or more descendant organisms?
Common ancestor
What is the evidence of shared ancestry in molecular biology?
All organisms have DNA/RNA with amino acid structure
What are the 5 useless body parts?
tailbone, wisdom tooth, muscles in the ear, erector pili and appendix.
What is the difference between homologous and analogous traits?
Homologous - same structure but not necessarily the same function; analogous - different structures but same function
