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Kitty [74]
3 years ago
13

What is the trait that is ancestral to all chordates?

Biology
2 answers:
nirvana33 [79]3 years ago
8 0
Notochord - a rod made from cartilage, in vertebrates it is replaced by spine
Alla [95]3 years ago
3 0
<span>The trait that is ancestral to all chordates is the presence of a notochord...the others are gill slits and nerve chord</span>
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The working distance (W.D.) which is determined by the linear measurement of the objective and front lens to the focal plane. In the general, the objective of the  working distance decreases by the magnification and the numerical aperture of both increase. The working distance is the distance and from the front of the lens to be the focal plane

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