Question 4 4 pts What is the polar lobe? In Snails, the polar lobe is nucleated

Question

Question 4 4 pts What is the polar lobe? In Snails, the polar lobe is nucleated ball of cytoplasm extruded immediately before the frst cleavage and contains cytoplasmic determinants important for the cleavage of the D blastomere In semaods thelaobeie ball f to eruded innedatily betore the frst dlavwage and contains cytoplbanic determinants important for the cleavage of the D blastomere In snails, the polar lobe is anucleated ball f cytoplasm extruded immediately before the frst cleavage and contains cytoplasmic determinants important for the cleavage of the D blastomere n nematodes, the polar lobe is anuckeated bal of cytoplasm extruded immediately before the first cdleavage and contains cytoplasmic important for the cleavage of the D blastomere the trfoil

Explanation / Answer

Answer:

In snails, th epolar lobe is anucleated ball of cytoplasmic extuded immediately, before the first cleavage and contains cytoplasmic determinants important for the cleavage of the D blastomere.

Explanation:

Certain spirally cleaving embryos (mostly in the mollusc and annelid phyla) extrude a bulb of cytoplasm immediately before first cleavage. This protrusion is called the polar lobe. It is an anucleate bulb of cytoplasm extruded immediately before first cleavage in certain spirally cleaving embryos (mostly in the mollusk and annelid phyla). it contains the determinants for the proper cleavage rhythm and the cleavage orientation of the D blastomere.

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