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Evolution Exam

All organisms have adaptions. What does the term adaption mean. Changes that increase the animals chance of survival.
Give two examples of behavioral adaptions 1. Moving slowly to avoid predators 2. Some collect food and store for future use.
Give two examples of structural adaptions. 1. Camouflaged 2. Animals that resemble objects
What is evolution Gradual development of different species from a common ancestor.
What was Lamarks theory of evolution. Organs are improved if used more, and this is passed on through reproduction to the next generation.
Is Lamarks theory supported? No, aquired characteristics cannot be inherited
What was Charles Darwin's theory? Natural Selection, the animals with the most suited characteristics would pass down these characteristics to their offspring.
Why did the virus, Myxamotosis, only get rid of the rabbit problem for a limited amount of time? Because the animals that were immune to the virus passed down that characteristic to their offspring and they reproduced.
What do the terms "Selected for" and "Selected against" mean? "Selected for": Characteristics that allow the organism to survive Selected Against: Characteristics that do not help the organism to survive.
What does the term Variation mean? There needs to be the same species of animals with the different genes, or else there won't be enough change if the animals environment changed drastically.
What is speciation? Formation of a new species
How do we know when two animals are different species? They have two different types of genes
Explain the three steps involved in speciation 1. Geographic Isolation 2. Natural selection at work 3. Reproductive isolation.
Created by: fadedcreed22