From the following statements and state true (T) and false (F):

A. In male grasshoppers, 50% of the sperm has no autosome.

B. Usually female birds produce two types of gametes based on sex chromosomes.

C. Failure of segregation of chromatids during cell division results in the gain or loss of chromosome.

D. Henking could trace a specific nuclear structure all through the oogenesis of few insects.