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Zool 310: Developmental Biology Y3s1 Question Paper

Zool 310: Developmental Biology Y3s1 

Course:Bachelor Of Education Science

Institution: Kabarak University question papers

Exam Year:2008



COURSE CODE: ZOOL 310
COURSE TITLE: DEVELOPMENTAL BIOLOGY
STREAM: Y3S1
INSTRUCTIONS TO CANDIDATES:
Answer All questions in Section A and Any TWO from Section B
SECTION A (40 Marks)
(Answer all questions)
1. Describe and illustrate three germ layers that constitute basic animal body. (6mks)
2. Distinguish between meiosis and mitosis. (6mks)
3. Explain the following terms
(a) Mosaic embryos
(b) Regulation embryos
(c) Morphogenetic movements. (6mks)
4. Explain briefly the following processes:
(a) Involution
(b) Invagination
(c) Convergent extension
(d) Epiboly. (8mks)
5. Write explanatory notes on the formation of embryonic gut in echinoderms. (8mks)
6. Differentiate between meroblastic and holoblastic cleavages. (6mks)
SECTION B (30 Marks)
(Answer any two questions)
7. Discuss the process of cell differentiation. (15mks)
8. Discuss the process of gastrulation in amphibians. (15mks)
9. Discuss the origin of the gametes. (15mks)




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