lecture3

lecture3 - Embryology of the Reproductive Organs The entire...

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Embryology of the Reproductive Organs The entire process of sexual development depends on a sequential series of interactions between regulatory factors and genetic machinery . Can not skip a step goes.
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Stages of Sexual Determination (Differentiation) 1. Chromosomal Determination XX female or XY male 1. Gonadal Determination Ovary or testes 1. Phenotypic determination What do sex organs look like
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1. Chromosomal Determination Ovum    22 Autosomes   1 X chromosome Sperm   22  Autosomes   1 X chromosome             or   1 Y chromosome Zygote = 46 XX                    or                 46 XY
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Cleavage
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Blastocyst
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Implantation
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Formation of the Placenta
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Primordial Germ Cells
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3 Week Embryo
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6 Weeks embryo
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6 weeks
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At Six Weeks Primordial Germ Cells Genital/ Gonadal Ridge
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TDF
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Testes Determining Factor TDF is a gene on the Y chromosome that converts the Gonadal/Genital ridge to a testes Inside a testes you have : -
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lecture3 - Embryology of the Reproductive Organs The entire...

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