Notesale: Turn your study into money

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Your Inner Fish Questions
1
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What prior knowledge did they need to know in order to make this prediction?
Shubbin and his colleagues make excavation site prediction based on locations that have
rocks are the right age, the right type to preserve fossils, and that are exposed at the surface
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What would you need to know to predict where to find fossils of the first vertebrates?
You would need to know when the first vertebrate were around, rocks around that are of
the right age, and rocks that are of the right type
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Tiktaalik had evolved certain characteristics that differentiated it from other aquatic organisms
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These features gave Tiktaalik the ability to survive on land
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4
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Based on Darwin’s theory that all animals come from a common ancestor and Richard
Owen work, Shubbin was able trace the limb structure of lung fish to the limbs of various other
animals, such as whales, bats and humans
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5
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Zwilling
and Sauders creative approach has been used many experiments and studies; leading to the
discovery of the Sonic Hedgehog Gene as the source for digit development
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A hypothesis is an educated guess that is based off of prior knowledge and research
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Work with fruit flies was used to learn about the chicken gene, sonic hedgehog, which was then
used to learn about humans and skates
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If the concentration of the sonic hedgehog is too high then extra digits can be formed
and too low of a concentration of the sonic hedgehog gene can result in missing digits
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Justify the claim that teeth, glands and feathers are all made through similar biological processes
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The two layers come together, fold, and secrete proteins
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8
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Using examples from the book, explain the
contributions of these fields to evolution of body form
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They went
to look for the hedgehog gene in other animals to find the chicken hedgehog gene which they
decided to name Sonic Hedgehog
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Too much of the sonic hedgehog gene can
results in extra digits and too little of the sonic hedgehog gene can result in missing digits
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When this molecule absorbs
light, it changes shape and breaks up into a substance derived from vitamin A and opsin
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In order to complete its chain reaction, opsin needs to carry a chemical across
the membrane that encircle a cell
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It is identical to parts of certain
molecules in bacteria
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Opsin – Germ Layers – Gill Arches – Sonic Hedgehog

9
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He had
found that they had elements of both kinds of animal photoreceptors
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10
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Provide two examples of each and explain the evidence that relates the human feature to our fish
ancestors
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The back of the throat has flexible walls that can open and close; this in
combination with tongue movement and changing the shape our our mouth, this is how speech is
formed
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With sleep apnea, while we sleep the muscles in our throat relax and with some people the
passage can collapse causing the person to experience a long stretch of time without taking a breath
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The shark’s gonads extend toward their chest, approaching their heart
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During fetal development, the gonads start in the chest have to travel down
throughand out of the body creating a weak spot in the body wall
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