# of differences in the amino acid sequence
Rhesus monkey 0
Common zebra 3
Pig, cow, sheep 3
Gray whale 3
Chicken, turkey 3
Pekin duck 2
Snapping turtle 3
Screwfly fly 12
Silkworm moth 13
Tomato horn worm 18
Baker’s Yeast 19
Candida Yeast 18
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?
When scientists say that living organisms share a universal genetic code it means the all living organisms have some traits in common but are not the exact same.
2. How does a universal genetic code relate to the hypotheses about the origin of life on Earth?
The universal genetic code relates to the hypotheses about the origin of life on earth coming from one similar ancestor by showing that we are someone what genetically similar to other living organisms
3. How are self-replicating molecules, such as RNA molecules in the “RNA World” hypothesis, essential to the most popular hypotheses about the origin of life on Earth?
If early RNA molecules were able to copy themselves to build new RNA molecules, this helps to explain why all organisms share the same genetic code. This helps to show how we are all closely related and how that is possible.
4. How might similarities and differences in genetic codes, or the proteins built as a result of these codes, be used to determine how closely related different species are?
These genetic codes can be used to determine how closely related different species are by their similarities and differences. If the genetic codes have few differences you can assume that those species are closely related. If there are more differences than similarities you can assume