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Spermatogenesis

Description

Developmental Biology Mind Map on Spermatogenesis, created by cblyth1 on 05/04/2013.
cblyth1
Mind Map by cblyth1, updated more than 1 year ago
cblyth1
Created by cblyth1 over 9 years ago
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Resource summary

Spermatogenesis
  1. Mitotic Proliferation
    1. Produces large numbers of stem cells which begin maturation at puberty where further mitotic divisions produce Type A spermatogonia
      1. Occurs in basal part of tubule. Stem cells along with mesodermal cells form seminiferous cords in developing testis.
        1. Spermatogonia are diploid and genetically identical. Some type A spermatogonia will further divide to type B from which primary spermatocytes arise.
          1. Meiotic proliferation
            1. Generates genetic diversity (chromatids exchange genetic material - crossover)
              1. Halves chromosome number (haploid)
                1. Spermatocytes become spermatids
                  1. Cytodifferentiation (Spermiogenesis)
                    1. Packages genes for delivery to oocyte
                      1. Elongating spermatids to spermatozoa
                        1. Spermiogenesis changes

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                      2. Occurs in adluminal compartment of tubule
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