Biology, 25.09.2019 12:10 porkhappycom
John is observing a few slides of a human embryo. the first slide shows a neural tube and the second just a compact mass of cells. which phases of human embryos are the slides?
a. first slide: blastula; second slide: gastrula
b. first slide: gastrula: second slide: neurula
c. first slide: neurula: second slide: morula
Answers: 1
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John is observing a few slides of a human embryo. the first slide shows a neural tube and the second...
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