Organismal Development Part 3
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Organismal Development Part 3. Male Animals. Mitochondrion. Intermembrane space. Outer membrane. Free ribosomes in the mitochondrial matrix. Inner membrane. Cristae. Matrix. Mitochondrial DNA. 100 nm. Protogynous. GYN means female (think gynecologist) - PowerPoint PPT Presentation
Transcript of Organismal Development Part 3
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Organismal Development Part 3Male Animals
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.MitochondrionIntermembrane spaceOuter membraneInner membraneCristaeMatrix100 nmMitochondrialDNAFreeribosomes in themitochondrialmatrix
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Protogynous
GYN means female (think gynecologist)Limited number of males present
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ProtoandrousANDRO refers to males Limited number of females present
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External Fertilization
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Phermones
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Earthworms are hermaphrodites
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Protogynous(Male is blue)
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Internal Fertilization required
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SpermatogenesisSpermatogoniumPrimary spermatocyte(in prophase of meiosis I)Mitotic division, producinglarge numbers of spermatogoniaMeiosis I completedDifferentiation and onset of meiosis ISecondary spermatocyteMeiosis IIEarlyspermatidsSpermatids(at two stages ofdifferentiation)DifferentiationSperm cellsNeckHeadMidpieceTailPlasma membraneMitochondriaAcrosomeNucleusSertoli cellnucleusLumen ofSeminiferous tubuleCross sectionof seminiferoustubuleTestisEpididymisSeminiferous tubule
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Secondary Sexual Characteristics
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