AP Biology / Unit 7: Natural Selection
7.7 Common Ancestry
Notes
All life shares features from a common ancestor: DNA and RNA, the genetic code, ATP, ribosomes, and the plasma membrane.
- Eukaryotes share membrane-bound organelles, linear chromosomes and introns.
Practice
Which feature do all living cells share?
Universal features.
The same genetic code in bacteria and humans is evidence of:
Inherited from a shared ancestor.
Eukaryotes share which feature not found in prokaryotes?
Membrane-bound nucleus.
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