Parts of a phylogenetic tree Match each feature of a phylogenetic tree with what it represents.
What will be an ideal response?
branches-connect common ancestors
phylogenetic tree-common ancestors and lines of descent
branch tips-existing species
nodes-species divergence
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Proteins are the intermediary between a(n) ____________________ and a(n) ____________________
Fill in the blank(s) with correct word
Which of the following infectious agents and means of disposal are mismatched?
A. Carcasses of animals that died of anthrax must be incinerated to avoid endospores entering the soil. B. Drums made with animal hides should be treated with sterilizing gas to eliminate endospores. C. Mosquito bed nets must be washed in bleach weekly to eliminate any residual Plasmodium. D. Coagulation factors purified from blood must be heat-treated to destroy HIV.
Extinct jawless fish include the:a
lungfishes. b. lancelets. c. placoderms. d. acanthodians. e. ostracoderms.
All molecules required to support the body's chemical reactions are obtained from food and are called
A. organic. B. vitamins. C. nutrients. D. carbohydrates.