... begets like" can be traced back as far as the ancient Greeks. Hippocrates, among many other philosophers, pondered heredity and came up with the theory of pangenesis, which states that sex involves the transfer of miniaturized, invisible body parts (Human Genetics, Notes p. 407). Preformation was another popular idea early in the history of humans. Preformationism contended that either the egg ... his theory of evolution by natural selection, put forth a modified version of pangenesis (DNA Watson). According to Darwin, the organs of an animal had "gemmules" that accumulated in the sex org...

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... to the question that occurred to you as you made your observation. Since it's an educated guess, I listed it after library search. 5. Experiment/Test. In many experiments, two groups are observed: an experimental group and a control group. Ideally the two groups are identical except for a single factor. ... is that you want to predict what should result under certain circumstances if your educated guess (hypothesis) is correct. A well-designed experiment will test that prediction. For an experiment to be designed well, it must have good verifiability (ability to show that your idea is t...

• Word Count: 10700
• Approx Pages: 43
• Grade Level: High School

... it, to the exclusion of all other weapons."3 This action is tested in a lab by firing a bullet using the weapon that is thought to be from the crime scene. The test bullet is compared to a bullet found at the crime scene under a comparison microscope. Both bullets are rotated until the striations can be made to line up, showing a match. If the ... the process by which a forensic psychologist looks at the aspects of a crime scene to come up with a description of the personality of the criminal. This personality description can include age, sex, occupation, behavioral disorders, upbringin...

• Word Count: 2730
• Approx Pages: 11
• Grade Level: High School

... every living organism's cells. Each chromosome is made up of fine strands of deoxyribonucleic acids, or DNA. The information carried on the DNA determines the cells function within the organism. Sex cells are the only cells that contain a complete DNA map of the organism, therefore, "the structure of a DNA molecule or combination of DNA molecules determines the shape, form, and function ... matter how much Frostban you dump on a field, it's not going to spread" (70). In fact Frostbran, developed by Steven Lindow at the University of California, Berkeley, was sprayed on a test field in 1...

• Word Count: 3104
• Approx Pages: 12
• Has Bibliography
• Grade Level: High School