Question

unit 3: instructional sequence 3

mechanism	description	example
comparative anatomy
comparative embryology
biogeography	location of speice around the world show hows evolution happens due to segrabon & enviromet
	using dna and protein sequences to show similarities anoung species	human & chompanzees
observed evolutionary change

Explanation:

This table covers evidence for evolution. Each row is completed with standard scientific descriptions and examples for each evolutionary evidence mechanism:

1. Fossil Record: Preserved remains/traces show species change over time; the example is a fossil (like the provided image of an ancient organism fossil).
2. Comparative Anatomy: Compares body structures of different species to find shared evolutionary origins; a common example is homologous structures like human arms, bat wings, and whale flippers.
3. Comparative Embryology: Studies early embryo development to reveal shared ancestry; the provided image shows similar early embryos of different vertebrates, which is the key example.
4. Biogeography: The provided description is refined to clarify it's the geographic distribution of species showing evolution via isolation/habitat differences; the map example shows unique island species (like Galápagos finches) that evolved in isolation.
5. Molecular Biology: This is the correct mechanism name for the given description; the example of humans and chimpanzees (highly similar DNA/proteins) fits.
6. Observed Evolutionary Change: Tracks real-time evolution in living populations; a classic example is antibiotic-resistant bacteria or peppered moths adapting to pollution.

Answer:

Mechanism	Description	Example
Comparative Anatomy	Compares body structures for shared ancestry	Homologous structures: human arm, bat wing, whale flipper
Comparative Embryology	Similar embryo development shows shared origins	Early vertebrate embryos (as pictured, e.g., human, chicken, fish embryos)
Biogeography	Species distribution shows evolution via isolation	Galápagos finches (unique island species, as pictured on map)
Molecular Biology	Using DNA/protein sequences to show similarities	Humans and chimpanzees (highly matching DNA)
Observed Evolutionary Change	Tracks real-time evolution in living populations	Antibiotic-resistant bacteria