The protostome developmental sequence arose just once in evolutionary history, resulting in two main subgroups—Lophotrochozoa and Ecdysozoa. What does this finding suggest? Select one: a. These two subgroups have a common ancestor that was a deuterostome. b. The protostomes are a polyphyletic group. c. Division of these two groups occurred after the protostome developmental sequence appeared. d. The lophotrochozoans are monophyletic.
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Biology, 22.06.2019 09:00
Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present
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Biology, 22.06.2019 09:30
Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?
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Biology, 22.06.2019 15:00
Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow
Answers: 1
Biology, 22.06.2019 16:00
Which statement describes the punctuated equilibrium theory?
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The protostome developmental sequence arose just once in evolutionary history, resulting in two main...
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