12 Questions
What is the selecting agent in natural selection?
The environment
Define adaptation in the context of evolution.
An inherited trait that increases chances of survival.
What is the result of natural selection?
Evolution
How do fossils provide evidence of evolution?
Fossils give us evidence of evolution by showing traces or remains of organisms preserved by nature.
What is the difference between relative dating and absolute dating when determining the age of fossils?
Relative dating uses sedimentary rock layers to determine the age of fossils, while absolute dating uses radioactivity.
Explain the concept of common ancestors in the context of evolution.
Present-day organisms have evolved from common earlier ancestors.
Explain the three types of evidence of a common ancestor.
Anatomical similarities (homologous, analogous, vestigial structures), embryological similarities, molecular similarities
What were the two points that led to disproving Lamarck's theory of inheritance of acquired traits?
The law of use and disuse, Inheritance of acquired characteristics
Explain the concept of speciation and the two ways it can occur.
Speciation is the formation of two new species. It can occur through isolation or adaptive radiation.
What are the two different ways in which evolution can happen?
Gradualism and punctuated equilibrium
Where does variation in species come from?
Variation comes from sexual reproduction and mutations
What is the purpose of a dichotomous key in classification?
A dichotomous key is used to identify organisms based on a series of choices leading to a classification.
Test your knowledge on key concepts related to evolution such as geologic evolution, organic evolution, natural selection, allele frequency, and adaptation. Understand how environmental changes impact the selection of favorable traits in organisms.
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