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A PGC moves through the dorsal mesentery toward a genital ridge. Which phase?
Synapsis, crossing-over, and chiasma formation are characteristic of?
Which sperm structure contains acrosin, trypsin, and hyaluronidase?
What distinguishes metacentric, subcentric, and telocentric chromosomes?
When do homologous chromosomes pair and separate in meiosis I?
An oocyte grows as flat follicular cells become cuboidal. Which stage is this?
