The given observation in sea urchins implies that new proteins should be synthesized so that the process of cell division can take place.
Sea urchins belong to the phylum Echinodermata. These organisms are mostly preferred by the embryologists for studying the process of cell division because they produce gametes in abundant amount which can be obtained easily. The sea urchins produce eggs as well as embryos which are transparent in nature.
Early cell divisions in sea urchins are fast-paced. Radial holoblastic cleavage can be observed in sea urchins. The proteins that are manufactured during cleavage use mRNAs present in the cytoplasm given by the female parent.
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Answer: nucleotide A will bind to nucleotide T during DNA replication.
Explanation:
In DNA replication, Adenine(A) pairs up with its complementary base Thymine(T). The DNA polymerase which is an enzyme ensures that the nucleotide with base T binds to the base A of parental nucleotide.
The answer its hybrid vigor