Biology 1201A Chapter Notes -Neuron, Phenylketonuria, Melanocyte

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During the 1700s anton van leeukuehoek saw animolecules in sperm of humans and animals. Some scientists speculated they saw little men in each sperm. Pangenesis- males and females formed pangenes in every organ. These pangenes then moved through their blood to the genitals and then to children. Concept originated with greeks and influenced biology up to around 100 years ago. The term blood relative , full blooded and royal blooded . Francis galton (darwin"s cousin) disproved the theory in the 1870s. Peas had 7 traits that gave results mendel could understand. For much of human history people were unaware of how heredity worked. Male flowers caused females flowers to open. Seeds produced by various body parts and transmitted to offspring at time of conception. Grew up on a form in what is now czech republic (austria) In typical breeding experiment, mendel would cross-pollinate two contrasting, true breeding variables.

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