1. Look again at the six embryos in their earliest stages. Describe the patterns you see. What physicalsimilarities exist between each of the embryos? 2. Does this suggest an evolutionary relationship? Explain how.these embryos can be used as evidence of acommon ancestor between each of these six organisms.
1. Look again at the six embryos in their earliest stages. Describe the patterns you see. What physicalsimilarities exist between each of the embryos? 2. Does this suggest an evolutionary relationship? Explain how.these embryos can be used as evidence of acommon ancestor between each of these six organisms.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:These are embryos at their most advanced stage, shortly before birth.
Fish
Salamander
Tortoise
Chick
Rabbit
Human
Describe how the embryos changed for each of these organisms from their earliest to latest stages.
Species
Anatomical Changes From Early to Late Stages
Human
Developed limbs, defined features in face, neck, ears, loss of tail, tiny fingers present
Chicken
Developed beak, tail shorter, wings and legs developed, head quite large
Rabbit
Tail gone, developed limbs, detailed features in ears and mouth
Tortoise
Shell developed, limbs have developed, tail is thinner, large belly, long tail, beak
Salamander Has gills, tail and large underbelly
Fish
fins developed, gills, tail and scales
1. Look again at the six embryos in their earliest stages. Describe the patterns you see.
What physicalsimilarities exist between each of the embryos?
2. Does this suggest an evolutionary relationship? Explain how.these embryos can be used as
evidence of acommon ancestor between each of these six organisms.
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