[1] She attended the University of the Philippines Los Baños, earning a bachelor of science in agriculture, magna cum laude, in 1956.

[1] After Ramirez completed her PhD, she returned to the University of the Philippines where she conducted research into the breeding and cytogenetics of plants.

She researched the genetic basis of chemical resistance factors of Cercospora, which causes the formation of leaf spots in mung beans.

Her plant research led to improved varieties of fruit, sugarcane, rice, coconut, and ornamentals.

She conducted research with Evelyn Mae Tecson-Mendoza on how macapuno coconut genes that characterize endosperm cell walls are affected by high galactomannan metabolism.