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Factors That Influence Evolution in Organisms - Coggle Diagram
Factors That Influence Evolution in Organisms
Proof That Evolution Happens
Genes
All living things share a universal "genetic code," showing connections
Example:
Similar genes for building eyes exist in humans and fruit flies
Real-Life Changes
Example:
Bacteria becoming resistant to antibiotics
Birds changing migration patterns because of climate shifts
Fossils
Fossils are remains or impressions of past organisms
Examples:
Bones
Shells
Leaves
Etc.
Signs That Evolution Has Happened
Similar Traits
Living things share features because of common ancestors
Examples:
Humans and bats both have arms, but bats' arms are wings for flying
Chickens, cats, and humans all have tails as embryos.
Leftover Traits
Vestigial traits (body parts we don’t use anymore)
Examples:
Whales and snakes have tiny, unused hip bones.
Humans have goosebumps and a tailbone (a remnant of a tail)
Ancestors and Descendants
Why They Matter
Ancestors show where modern species came from and how they changed
Example:
Galápagos finches all came from one ancestor but evolved different beaks for different foods
Transitional Fossils
Fossils that show links between old and new species.
Examples:
Lungfish-like ancestors became amphibians
Whales’ fossils show how they lost legs and became swimmers
New Species
Evolution creates new species (speciation)
Shared Traits
Explains why species share:
Genetic
Structural
Developmental similarities
Different types of evidence:
Fossils
Genes
Traits