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UNIT 4 PART1 MODERN GENETICS
UNIT 4 PART1 MODERN GENETICS

... between the bases. • Two new molecules are built by attaching new nucleotides to each original strand which acts as a template, or pattern. ...
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... genetic distance is expressed in morgans. A morgan is distance on the genetic map: it is defined as the distance between two loci such that on average one ...
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... thousands of genes enables a large-scale unbiased profiling of a heritable cellular trait that mediates the genetic basis of complex phenotypes. The resulting data forms a highdimensional multivariate sample which, to a large extent, reflects the entire phenotypic state of cells, tissues and sometim ...
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... 6. Crossing a purebred purple-flowered plant with a purebred white-flowered plant can be symbolized by which of the following genotypic crosses? a. Ff x ff c. FF x FF b. Ff x Ff d. FF x ff 7. After fertilization, an organisms grows (creates more cells) through the process of a. mitosis c. cellular r ...
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Epigenetics of human development

Development before birth, including gametogenesis, embryogenesis, and fetal development, is the process of body development from the gametes are formed to eventually combine into a zygote to when the fully developed organism exits the uterus. Epigenetic processes are vital to fetal development due to the need to differentiate from a single cell to a variety of cell types that are arranged in such a way to produce cohesive tissues, organs, and systems.Epigenetic modifications such as methylation of CpGs (a dinucleotide composed of a 2'-deoxycytosine and a 2' deoxyguanosine) and histone tail modifications allow activation or repression of certain genes within a cell, in order to create cell memory either in favor of using a gene or not using a gene. These modifications can either originate from the parental DNA, or can be added to the gene by various proteins and can contribute to differentiation. Processes that alter the epigenetic profile of a gene include production of activating or repressing protein complexes, usage of non-coding RNAs to guide proteins capable of modification, and the proliferation of a signal by having protein complexes attract either another protein complex or more DNA in order to modify other locations in the gene.
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