Contents

Preface ix

List of Contributors xv

Gene expression during mouse spermatogenesis 1
Klaus Steger

Egg zone pellucida, egg vitelline envelope, and related extracellular glycoproteins 31
Luca Jovine, Eveline S. Litscher and Paul M. Wassarman

Activation of zygotic gene expression in mammals 55
Melvin L. DePamphilis, Kotaro J. Kaneko and Alex Vassilev

Early embryonic gene transcription in Xenopus 85
Gert Jan C. Veenstra

The cell cycle during oogenesis and early embryogenesis in Drosophila 107
Giovanni Bosco and Terry L. Orr-Weaver

Anterior-posterior patterning in the Drosophila embryo 155
Andrezej Nasiadka, Bruce H. Dietrich and Henry M. Krause

Embryonic stem cell development in mammals 205
Colin L. Stewart

Genomic imprinting 233
Katharine L. Arney, Sylvia Erhardt and M. Azim Surani

Colour plate section 265