Embryology provides evidence of evolution

Please complete the vocabulary section of your notes during this presentation.

Paraphrasing and Hieroglyphics should be completed as homework

Embryo• Embryo is an

organism in its early stage of development.

Pharyngeal Pouches

• Pharyngeal pouches is an area located in the back of the mouth or throat

Homologous Structures• homologous structures

are structures that have different mature forms in different organisms but develop from the same embryonic tissues

Coccyx• Coccyx a small

triangular bone at the base of the spinal column consisting of several fused rudimentary vertebrae. Also called tailbone.

Vertebrate

• Vertebrate animals that have a backbone and similar organ structures.

Calf

• Calf a young bovine animal, especially a domestic cow or bull in its first year.

Swine• Swine is a pig or

hog

Embryology provides evidence of evolution example #1

Larva

Adult barnacleAdult crab

identical larvae, different adult body forms

Embryology provides evidence of evolution example #2

similar embryos, diverse organisms

Evidence of Evolution in Agriculture• Evolution of pesticide

resistance in response to selection.

• Pesticides eliminate all insects except those with genes causing resistance

• Resistant genes of survivors are passed on to next generation forcing species evolution.