Essays on Mendel

Gregor Mendel's studies laid the foundation for modern genetics. In a series of elegant experiments, Mendel was able to deduce the most fundamental laws of single-gene and multiple-gene inheritance without having the scientific data on chromosomes, their structure, or meiotic segregation. In this lab, you will learn about and apply examples for 3 different patterns of human inheritance of traits.

Punnett Square is a tool used to theoretically predict genotypes of the progeny from the genotypes of parents as a result of sexual reproduction. Genes from parental gametes are written as rows and columns of the Punnett Square. All ...

Purple=dominant White=recessive 5) After looking at the punnett square and using the vocabulary terms above, why were all the offspring in the F1 generation showing the dominant characteristic? Each trait is being controlled by genes. There is one packet that comes from each parent. When TT is crossbred with tt plants, they produce Tt plants in the F1 generation. The F1 plants are all purple because the T allele is expressed in every offspring and it covered up the t allele. 6) Any time you have a capital letter in one or both alleles, the dominant form of the ...

Human beings all belong to the species Homo sapiens. However, both Neanderthals and modern humans are most likely the homo heidelbergensis descendants. Homo sapiens are believed to have evolved in Africa nearly 200,000 years ago and gradually migrated north, through the Middle East, to Europe and Asia. A skull 160,000 years old was discovered at the Herto site area of Ethiopia (Anthro.palomar.edu, 2010). Other more advanced transitional forms have been discovered at Laetoli in Tanzania and are 120,000 years old. About 115,000 years ago, some early modern humans (Homo sapiens) ago widened their range to ...

Governor Wilson ran full-page ads in the major California newspapers, the New York Times, and the Washington Post, to launch his anti-immigrant based re-election campaign. The ads were in the form of a letter to President Clinton, demanding that he halt illegal immigration to the State of California as well as reimburse the state for the cost of federally mandated health, education, welfare services, and the incarceration of undocumented immigrants. Remarkably, Governor Wilson was able to narrow the complex political and economic conditions besieging California. It proved to be a politically astute move. In doing so, Wilson obfuscated the ...