1. The embryo sac is developed from a single megaspore. Its antipodals disorganize early. The micropylar end becomes bulbous, while the chalazal end becomes long and narrow and is covered by a ...

The indeterminate gametophyte1 mutation in maize has been known to disrupt development of the female gametophyte. Mutant embryo sacs have abnormal numbers and behavior of micropylar and central cell ...