12 The birds and the bees

12 The birds and the bees - TFTD: Insect Reproduction or...

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Unformatted text preview: TFTD: Insect Reproduction or The Birds & the Bees Reproduction . Noun . Etymology, Latin, re- again + produce (Fr. Reproduire) = make a copy. 1 : the act or process of reproducing; specifically the process by which plants and animals give rise to offspring Insect Success High reproductive potential one major key to success Others (review): o Diversity of species o Small size o Evolutionary longevity o Ecological diversity (niches filled) o Exoskeleton o Flight o Metamorphosis o Reproduction There are 2 cell types in animals: Somatic cells (body cells) Somatic cells form the various tissues and organ systems of the body: muscle, heart, nervous system, etc. Germ cells (reproductive cells) o Found in ovaries or testes Reproduction Germ cells form gametes (sperm & eggs) Fly Sperm Cells Insect Egg Genetic material in somatic cells Somatic cells have a full complement of chromosome pairs: Chromosome =section of DNA in cell nucleus (usually paired) H. sapiens 23 pairs Drosophila spp. 4 pairs = Diploid condition Genetic material in germ...
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12 The birds and the bees - TFTD: Insect Reproduction or...

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