Make an observation.
Ask a question.
Form a hypothesis, or testable explanation.
Make a prediction based on the hypothesis.
Test the prediction.
Answer: Option B.
Neural crest and peripheral nervous system.
Explanation:
Neural crest are bilateral paired cells of the neural tube that arise from the ectoderm layer of the embryo. Thesescells move to different part of the body and differentiate into various cell types like melanocytes,cartilage and bone, smooth muscle, craniofacial, neurons, gangalia e.t.c. The neural crest running through neural tube develop into peripheral nervous system after birth. Peripheral nervous system consist of neurons and gangalia outside the nervous system The peripheral nervous system connect the central nervous system to organs, skin and limbs.
The answer is thyroidectomy
<span>Platyhelminthes phylum. This phylum is known for its flatworms, like planaria, tapeworms and flukes, that later being completely parasitic.</span>
Yeah, they are right!! Child with group A must be adopted
As john's genotype would be Ib Ib, which must pass his one Ib, and in the presence of that, offspring can't be of type A