'The development of a multicellular organism from a single egg cell requires both the
determination of many cell types and the organization of these cells into an elaborate pattern …

Gap genes are involved in segment determination during the early development of the fruit
fly Drosophila melanogaster as well as in other insects. This review attempts to synthesize …

The region-specific homeotic gene fork head (fkh) promotes terminal as opposed to
segmental development in the Drosophila embryo. We have cloned the f&h region by …

Animal development is characterized by signaling events that occur at precise locations and
times within the embryo, but determining when and where such precision is needed for …

The first morphogenetic movement during Drosophila development is the invagination of the
mesoderm, an event that folds a one-layered epithelium into a multilayered structure. In this …

In mutagenesis screens for recessive female sterile mutations on the second chromosome of
Drosophila melanogaster 528 lines were isolated which allow the homozygous females to …

We have studied the embryonic development of Drosophila hemocytes and their conversion
into macrophages. Hemocytes derive exclusively from the mesoderm of the head and …

The dorsoventral axis of the Drosophila embryo is determined by a morphogen gradient
established by the action of 12 maternal-effect genes: the dorsal group genes and cactus …

Mutants of the maternal posterior-group genes of Drosophila lack posterior body pattern
elements and germ cells, both of which form through the action of determinants localized to …

Segmental pattern in the Drosophila embryo is established by two maternal factors localized
to the anterior and posterior poles of the egg cell. Here we provide molecular evidence that …