Explain the difference between rooted and unrooted phylogenetic trees
What will be an ideal response?
ANS:
Will vary, but should include: On rooted trees, the common lineage from which all species depicted on the tree are derived is indicated at the base of the tree; direction in a rooted tree indicates the passage of time. Un-rooted trees do not fully indicate the direction of time, and although branch tips indicate more recent species or populations, given interior nodes, one cannot say that one node represents a more recent population than another.
You might also like to view...
Pyruvate oxidation in eukaryotic cells occurs in the ________.
A. cytoplasm B. nucleus C. Golgi body D. mitochondria E. plasma membrane
The CRISPR-Cas9 system is a tool to perform
A) exome sequencing. B) DNA profiling. C) pharmacogenetics. D) genome editing.
A researcher in a lab finds a microscopic organism that has no nucleus, but has distinctive structural
molecules and mechanisms of photosynthesis. The organisms are abundant in virtually every habitat on Earth. The researcher has identified an organism belonging to the domain ____.
a. Bacteria b. “Protist” c. Eukarya d. Animalia e. Amoeba
What is the main cause of drying and desiccation?