Developmental Biology

5. The germ layer which gives rise to the epidermis (8)
7. A transcription factor that establishes primary germ layers (4)
8. The pole of an egg which contains the majority of the yolk (7)
9. The germ layer which gives rise to muscle and blood (8)
11. The union of sperm and egg to form a zygote (13)
12. A glycoprotein layer that surrounds mammalian oocytes (4,9)
13. Cytoplasmic elements which segregate asymmetrically to determine germ cell fate in C. elegans (1,8)
14. The process by which cells become specialized in structure and function (15)
16. A protein involved in the establishment of the dorsal-ventral axis in development (4,7)
17. The process of egg production in females (9)

1. The germ layer which gives rise to the gastrointestinal and respiratory systems (8)
2. Mesodermal block-like segments of vertebrate embryos that give rise to the axial skeleton and skeletal muscle (7)
3. The method of creating an embryo by implanting a donor nucleus from a somatic cell into a denucleated egg cell (4)
4. The concept that all cells contain the same genetic material (7,11)
6. An early stage embryo which comprises of trophoblast cells and an inner cell mass (10)
9. A transcription factor that regulates muscle differentiation (4)
10. The process of sperm production in males (15)
13. Germ cells which give rise to gametes (10)
15. The genus of a 'hoppy' model organism (7)