BSC 1010 Chapter Notes - Chapter 12: Egg Cell, Phenotype, Pangenesis
4 Feb 2017
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Spermists: believed that the complete human being was contained in the sperm rather the ovum. Ovists: believed that the complete human being was contained in the ovum rather than the sperm. Pangenesis: theory of heredity proposed by charles darwin in which gemmules containing hereditary information from every part of the body coalesce in the gonads and are incorporated into the reproductive cells. 1760, cross-fertilized different strains of tobacco & obtained fertile offspring. True-breeding: breed/variety of organism in which offspring are uniform & consistent from one generation to the next due to genotypes that determine relevant traits being homozygous. Earlier investigators had produced hybrid peas, so mendel knew he could expect to observe segregation of traits. Pea plants are small & easy to grown. Both male & female sexual organs are enclosed within each flower. Gametes produced by male & female parts of the same flower can fuse to form viable offspring (self-fertilization) Mendel"s experiment was conducted in 3 stages:
