Examlex
Which Ecdysozoa phylum contains three-quarters of the known animal species?
Oocyte Membrane
The outer covering of an oocyte, or egg cell, that regulates the entry and exit of substances.
Sperm Membrane
The outer layer of a sperm cell that protects genetic material and mediates its interaction with the egg during fertilization.
Selective Gene Expression
This describes the process by which certain genes are activated to produce a specific set of proteins in different cell types, conditions, or stages of development.
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