Solved by a verified expert:1.Which of the following tissues are derived from the somites? I’m between A and D.A.tendons, spinal cord, cartilageB.aorta, brainC.brain, spinal cordD.cartilage, muscle , bone2.If you made a conditional knockout mouse that did not express any ephrin in the somites, what would you expect to see if you used an in situ hybridization probe to visualize the trunk neural crest?A.A. Neural crest would migrate randomly through the somites.B.Neural crest would migrate into the pharyngeal arches.C.Neural crest would migrate through the rostral somite compartment.D.Neural crest would migrate into the notochord.E.Neural crest would migrate through the caudal somite compartment.3.Hypoxia, or low oxygen levels, can disrupt somitogenesis during pregnancy. If a pregnant mouse were exposed to hypoxic conditions at the very end of somitogenesis, which of the following vertebrae would be the most severely affected?A.thoracicB.cervical (neck )C.caudal (tail)D.sacral (pelvic)E.lumbar (lower back)
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