Biology, 23.07.2020 01:01 savyblue1724707
The ancestors of modern-day fish were vertebrate chordates. Vertebrate chordates are believed to have evolved from invertebrate chordates, which were similar to modern-day tunicates. What change must have occurred during the evolution from invertebrate chordates to vertebrate chordates? A. An endoskeleton evolved to enclose the spinal cord, which develops from the notochord. B. An endoskeleton evolved to enclose the dorsal nerve cord, which develops from the notochord. C. A backbone evolved to enclose the notochord, which develops from the spinal cord. D. A backbone evolved to enclose the spinal cord, which develops from the dorsal nerve cord.
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Biology, 21.06.2019 20:00
Which of the following represents the correct format for the scientific name? a. staphylococcus aureusb. staphylococcus aureusc. staphylococcus aureusd. staphylococcus aureus
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Biology, 22.06.2019 02:30
Many plants can reproduce asexually. which of these is an example of asexual reproduction in a plant? a. pine cones forming on a tree b. cross-pollination in a tomato c. roots sprouting from a potato d. night-blooming jasmine flowers
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Biology, 22.06.2019 05:00
A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?
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The ancestors of modern-day fish were vertebrate chordates. Vertebrate chordates are believed to hav...
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