Learning Reproduction in Farm Animals

1. Recombination of sex chromosomes at fertilization.
A. Chromosomal sex (genotype):
 
 
 
 
 
 
 
 
 
 

B. Hermaphrodite:
 
 

• true hermaphrodite

 

 
 
 

• male psuedohermaphrodite

 
 

 

• female psuedohermaphrodite

 

 
 
 
 


 


 
 
 
 
 

C. H-Y Antigen:
 
 
 
 

D. Sry Gene:
 
 
 
 
 
 
 
 
 
 

 Figure from Pomp et al. 1995 J. Anim. Sci. 73:1408-1415            

 

 

2. Development of the gonads, reproductive tract and external phenotype.
A. Origin of gonads
 
 
 
 

B. Origin of reproductive tract

 
 Two Ducts
 
 Mullerian Duct
 
 
 Wolffian Duct
 
 

 
 
 
 
 
 
 


 

3. Sexual differentiation of the brain.

 
A. Testicular hormones
 
 
 
 
 
 

B. Role of aromatization and a-fetoprotein
 
 
 
 
 
 
 
 
 
 
 

         

 
 
 

 
 
 
 
 
 
 
 
 
 
 
 

Illustrated Notes

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