macromere การใช้

• Each macromere has the potential of becoming the D macromere.
• Each macromere has the potential of becoming the D macromere.
• This larger cell is specified as the D macromere.
• :Specification of the D macromere and is an important aspect of spiralian development.
• This contact is required to distinguish one macromere as the official D quadrant blastomere.
• The polar lobe contains vegetal cytoplasm, which becomes inherited by the future D macromere.
• The D macromere facilitates cell divisions that differ from those produced by the other three macromeres.
• At the 4-cell stage of equal cleavage, the D macromere has not been specified yet.
• All teloblasts are specified from the D quadrant macromere after the second round of divisions post-fertilization.
• Unlike equally cleaving spiralians, the D macromere is specified at the four-cell stage during unequal cleavage.
• This results in an unequal cytokinesis, in which both macromeres inherit part of the animal region of the egg, but only the bigger macromere inherits the vegetal region.