Answer:
primary germ cells or primordial germ cells
Explanation:
During the early stages of embryonic development , primary germ cell or primordial germ cells develops within the pre-ectodermal tissue. they are diploid like other somatic cells and found in the primary ectoderm (epiblast) in the second week.
Primary germ cell moves through the gut of an embryo in order to develop gonads. Further they undergo meiosis process followed by cellular differentiation and five rise to mature gametes, either sperms (primary spermatocytes) or eggs (primary oocytes).
Hence, the correct answer is primary germ cells.
