germinal disc

small, circular, white spot on the surface of the yellow yolk of a bird's egg

en-GB/ˈd͡ʒɜːmɪnəl ˈdɪsk/
en-US/ˈd͡ʒɝmənəl ˈdɪsk/

ক্যাটাগরি:

blastoderm