Phylogenetic trees show inferred evolutionary relationships in the form of multiple branching lineages connected by nodes.
Answer the following statement true (T) or false (F)
True
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To survive, an animal needs all its sensory receptors working, and even then, it cannot fully sense the external environment. What extra sensory receptors do you think would be advantageous to the survival of humans in this modern world?
What will be an ideal response?
Characteristics between the branch points of a cladogram that are shared by all organisms above the branch point and are not present in any below it are called
A. homologous characters. B. homoplastic characters. C. ancestral characters. D. derived characters. E. novel characters.
Many patients who have a certain blood clotting disorder in which the blood clots too readily have a mutation in the promoter of a gene. This mutation most likely
A) deletes a gene for a clotting factor. B) blocks transcription of a clotting factor. C) increases susceptibility to a specific viral infection. D) increases the transcription rate of a particular clotting factor gene.
Members of which of the following groups can
be single-celled producers?
a. plantae b. protista c. bacteria d. bacteria and protista e. bacteria and plantae