Evolution
A theory supported by evidence for how populations change over time
Evolution
Allows organisms to adapt to changing environments
Variation/Diverse Traits
What do all organisms want?
To survive and have offsprings
Body parts, behaviors, or organs that have lost most or all of their original function through evolution
What are Vestigial Structures?
What are offsprings?
Babies, children, Young ones
A species of animal or plant has completely died out and no longer exists anywhere on Earth
Extinction
What is Artificial Breeding (Selective Breeding)
When humans select the traits.
What is Adaptation?
When plants and animals have certain features, or traits, that help them survive in their environment
Structures that are similar in two different species because they where inherited from a common ancestor.
What is homologous structures?
What is a Trait?
Characteristics
Which population would survive changes better?
Large population with high variation of traits or
Small population with low variation of traits.
Large population with high variation of traits.
What does Diversity mean?
Variety, different options
Body parts that share a common function but have a different structure.
Analogous structures
The science that studies embryos
Embryology
Evolution can only occur when there is _______
Variation
Which form of reproduction gives us varity or variation of traits?
Sexual Reproduction
what does Variation mean?
Differences in traits
What are fossils?
Preserved remains, trace, or impression of a living organisms from long ago
In human embryos ______ develop to form part of the jaw, ear, and throat .
Gills
What is a Common Ancestor?
Ancestor that they have in common/related
(great great great great great grandfather)
What is Natural Selection?
Nature selects the best traits for organism to survive in their environment and be able to reproduce and pass on their genes.
Random changes in DNA
Mutation
In embryology, the embryos are very similar to each others, this evidence supports that we have a _______.
Common Ancestor
What is Inheritance?
When traits are passed to offspring - what you get from your mom and dad