Human vs.

Human vs. Other Organisms # of differences in the amino acid sequence
Rhesus monkey None.
Horse 3: Valine, Glutamine, Alanine
Donkey 3: Valine, Glutamine, Alanine
Common zebra 3: Valine, Glutamine, Alanine
Pig, cow, sheep 3: Valine, Glutamine, Alanine
Dog 3: Valine, Glutamine, Alanine
Gray whale 3: Valine, Glutamine, Alanine
Rabbit 3: Valine, Glutamine, Alanine
Kangaroo 3: Valine, Glutamine, Alanine
Chicken, turkey 3: Isoleucine, Valine, Glutamine
Penguin 4: Isoleucine, Valine, Glutamine, 0
Pekin duck 2: Valine, Glutamine
Snapping turtle 3: Valine, Glutamine, Alanine
Rattlesnake 4: Serine, Glycine, Threonine
Bullfrog 4: Valine, Glutamine, Alanine, Cysteine
Tuna 4: Alanine, Valine, Glutamine, Asparagine
Screwfly fly 5: Valine, Glutamine, Arginine, Alanine
Silkworm moth 8: Asparagine, Alanine, Asparagine, Valine, Glutamine, Arginine, Alanine, Alanine
Tomato horn worm 9: Asparagine, Alanine, Aspartic acid, Asparagine, Valine, Glutamine, Arginine, Alanine, Alanine
Wheat 10: Asparagine, Proline, Aspartic acid, Alanine, Alanine, Lysine, Threonine, Alanine, Aspartic acid, Alanine
Rice 9: Asparagine, Proline, Lysine, Alanine, Glutamic acid, Lysine, Threonine, Alanine, Aspartic acid
Baker’s Yeast 11: Serine, Alanine, Lysine, Alanine, Threonine, Leucine, Lysine, Threonine, Arginine, Glutamic acid, Leucine
Candida Yeast 13: Serine, Alanine, Lysine, Alanine, Threonine, Leucine, Lysine, Threonine, Arginine, Alanine, Glutamic acid, Isoleucine, Alanine
Neurospora 14: Serine, Lysine, Alanine, Asparagine, Leucine, Lysine, Threonine, Arginine, Alanine, Glutamic acid, Glycine, Glutamic acid, Glycine, Glycine

Reflection Questions:
Summarize your amino acid comparison in paragraph form. To guide your summary, reflect on the following questions.

1. What does it mean when scientists say that living organisms share a universal genetic code?
It means that all extinct organisms have all the same genetic code.
2. How does a universal genetic