University of Rajasthan 2007 B.Sc Zoology Ist - Question Paper

PAPER-III : Z-103
GAMETE & DEVELOPMENTAL BIOLOGY
Section-A
GAMETE BIOLOGY
Historical review and kinds of embryology
Gametogenesis:
Formation of egg and sperm.
Vitellogenesis
Fertilization : Activation of ovum, essence of activation : modifications in the organization of the egg cytoplasm.
Parthenogensis
Section-B


DEVELOPMENTAL BIOLOGY
Cleavage : Definition, planes and trends among chordates significance of cleavage; blastulation and morulation.
Fate maps, morphogenetic cell movements, significance of gastrulation.
Embryonic induction; primary organizer, differentiation competence;
Regeneration
Development of chick up to 96 hours
Embryonic adaptations:
Extra-embryonic membranes in chick.
Placentation in Mamals : Definition, types, classification on the basis of morphology and histology; functions of placenta.
Section-C
NEW DIMENSIONS IN DEVELOPMENTAL BIOLOGY
different kinds of stem cells and their applications (with special reference to embryonic stem cells)
Cloning of animals.
Nuclear Embryonic Transfer Technique.
Nuclear Transfer Technique.
Embryonic or Therapeutic clone.
Teratological effects of Xenobiotics.
Brief account of biology of aging.

Earning:   Approval pending.