Pedigree analysis is the process of examining a pedigree to determine the pattern of inheritance for a trait. Pedigrees are often used to determine if a trait is dominant or recessive.Know More
Dominant traits are passed on to a child from at least one affected parent. This results in a trait that does not skip generations. Recessive traits can be masked by dominant genes. This means that both parents can be carriers and have an affected child, resulting in a recessive trait that can skip generations.
Pedigrees show the presence or absence of a trait through several generations of a family by using a series of symbols to represent family relationships, with squares representing males and circles representing females. A marriage is shown by connecting two symbols with a horizontal line. When children result from a union a vertical line drops down from the couple, and the children are represented below the couple. This results in an diagram with successive generations occurring in a vertical pattern, with the oldest generation at the top of the pedigree and the youngest generation at the bottom. The presence of a trait is indicated by a shaded circle or square, while the absence of a trait is indicated by a clear symbol.Learn more about Cells
Nucleation is the process that enables the formation of crystals. Crystals may arise from solutions, liquids or vapors but must undergo the process of nucleation to do so. Essentially, nucleation is to crystals what metamorphosis is to insects.Full Answer >
Aerobic glycolysis is the process in which glucose is oxidized to produce two molecules of pyruvate and ATP and NADH are produced, according to The Medical Biochemistry Page. This is the net reaction of aerobic glycolysis.Full Answer >
During mitosis, new nuclear membranes form around the chromatids that were split during the anaphase stage of the process. The nuclear membrane of the original nucleus dissolves during the earlier prophase stage of the mitosis.Full Answer >
"Crossing over" in meiosis refers to the process by which segments of DNA on nonsister, or homologous, chromatids break off and recombine on the other homologous chromatid. This process becomes a source of variation in egg and sperm cells.Full Answer >