Gametogenesis Lab
Purves,orians, Heller, and Sadava- Life, The Science of Biology
Chapter 39- Animal Reproduction
Objective: To observe the slides of the ovaries and the testes.
Identify the steps in the process of spermatogenesis from the slides
Identify at least three steps in the development of the ovum
Complete core vocabulary
Complete coloring of diagrams
Study
Vocabulary words for spermatogenesis
testis
seminiferous tubules
sertoli cell
testosterone
SRY gene - developmental gene on Y chromosome
TDF - Testes determining factor
ABP - Androgen Binging Protein
primordial germ cells
spermatagonium(a)
primary spermatocyte
secondary spermatocyte
spermatid
Sperm - Head, neck, flagellum, and acrosome( sperm morphology)
Pictures from the Coloring Book of Physiology- Please color code and study you coloring book picutres
Identify the key cells by observing the following photomicrographs
Seminiferous tubules- scanning- overview
Spermatogenesis showing spermatagonia, primary and secondary spermatocytes, and sperm
Sperm and flagella in lumen of tubule( 100x)
Identify the progression of cells involved in spermatogenesis
Vocabulary words for oogenesis
ovary
oogonium
primary oocytes
secondary oocyte
ootid
ovum
arrest- prophase I diplotene)
first polar body
second polar body
non disjunction
chromosomal anomaly
follicle
antrum
corpus luteum
estrogen
progesterone
Oogenesis
Development of follicle on the surface of the ovary
Look for the cells in the schematic picture on the surface of the ovary.
Photomicrographs by Patricia Sidelsky. Teacher
Cat Ovary ( 50x) Motic Camera. This shows the ovary with follicles in various stages of development
Cat Ovary 100x- Corpus luteum in lower left, primary follicles, and Graafian follicle
Identify the developing oocyte in the follicle.
Graafian Follicle with arrow pointing to egg
A= antrum, fluid filled cavity with nutrients
Follicle cells surrounding the antrum and egg- provide estrogen that enables the egg to progress through meiosis