Natural Selection & Darwin
This part of natural selection explains that organisms produce more offspring than can survive, like a frog laying 5,000 eggs.
What is overproduction?
Body parts that an organism has but no longer uses, such as the human tailbone or whale hip bones.
Waht are Vestigial Structures?
A mutation that helps an organism survive and reproduce better, such as a rabbit becoming faster.
What are positive mutations?
This is the oldest era in Earth's history, characterized by simple organisms like bacteria
What is Precambrian Era?
This term describes the process where individuals better suited for their environment survive and reproduce more successfully.
What is natural selction?
This field of study looks at how different animal embryos look very similar in early development.
What is embryology?
This type of mutation, like blue eye color in humans, neither helps nor hurts an organism's survival.
What is Neutral Mutation?
This diagram shows how different organisms are related based on shared traits, looking like a family tree for species
What is a Cladogram?
Unlike Darwin, this scientist incorrectly believed that traits acquired during a lifetime (like strong muscles) could be passed to offspring.
Who was Jean-Baptiste Lamarck?
These are body parts in different species that have similar bone structures but different uses, like a bat's wing and a human's arm.
What is Homologous Structures (or Comparative Anatomy)?
Variation occurs because offspring inherit different combinations of genes from these.
What are both parents?
Dinosaurs lived during this era before an asteroid caused their extinction 66 million years ago.
What is Mesozoic Era?
These are the four parts of Darwin’s Theory of Natural Selection.
Overproduction, Variation, Competition, and Successful Reproduction
What are Overproduction, Variation, Competition, and Successful Reproduction?
This specific type of fossil shows how one group of animals evolved into another, such as fish evolving into amphibians.
WHat are transitional species?
Explain why a "negative mutation" would likely disappear from a population over time.
What is because it makes it harder to survive, the organism is less likely to reproduce and pass the gene to offspring?
List the four eras of the Geological Time Scale in order from newest to oldest
What are Cenozoic, Mesozoic, Paleozoic, and Precambrian?
These are the four parts of Darwin’s Theory of Natural Selection
What are Overproduction, Variation, Competition, and Successful Reproduction?
This specific type of fossil shows how one group of animals evolved into another, such as fish evolving into amphibians.
What is a Transitional Species? (Fossil)
Explain why a "negative mutation" would likely disappear from a population over time.
What is because it makes it harder to survive, the organism is less likely to reproduce and pass the gene to offspring?
List the four eras of the Geological Time Scale in order from newest to oldest.
What are Cenozoic, Mesozoic, Paleozoic, and Precambrian?