Transcript Embryo Embryo

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 crab
Adult barnacle
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.