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Genetics ch1-4

genetics intro, dna history chromosome, dna replication

Genetics The science heredity; study of inherited variation
The different fields of genetics Transmission (classical) genetics, molecular genetics, and population genetics
Transmission/classical genetics The study of how genes and traits are transmitted/passed on from one generation to the next.
Individual The focus in transmission genetics is the —— organisms
Molecular genetics The study of genetics at the biochemical (DNA) level
Gene The focus of molecular genetics is the ——
Population genetics The study of the genetic composition of populations (groups of members of the same species), and how that composition changes over time and space
Group of genes The focus of population genetics is the ——— found in a population as it pertains to evolution
Model organisms used in genetics studies Zebra fish, E. coli, mouse (mus musculus), drosophila fly),
How has studies of the zebra fish (SLC24A5) helped geneticists? Helped in the study of human skin color; the gene coded for a protein that takes part in Ca+2 uptake by melanosomes (Cheng); human have the similar gene with that same function
The importance of genetics when studying the individual Genes are fundamental to the behavioral and physical characteristics of an individual; genes contribute to personality and intelligence; genes regulate development ; they contribute to physical appearance; and contribute to disease suceptibility
The importance of genetics in society Genetics application have contributed to major advances in basic research, forensic science, agriculture, and medicine.
The importance of genetics in biology Genetic variation is the foundation for the diversity of life, and allows evolution to occur.
DNA The genetic Material
Some of the dates for some of the important DNA discoveries 1900s (Morgan et al), 1928 (Griffith), 1944 (Avery, MacLeod and McCarty) , 1952 (Hershey and Chase), 1953 (Watson and Crick), 1957 (Fraenkel-Conrats at al)
What discovery did Morgan's group make in the early 1900s? Determined that genes are located on chromosomes
What discovery did Griffith make in 1928? Discovred bacterial transformation
What discovery did Avery, MacLeod and McCarty make in 1944? Showed that the "transforming principle" in the bacteria is DNA, thereby DNA is the genetic material
What discovery did Hershey and Chase make in 1952? Provided further evidence that DNA is the genetic material by showing that DNA carries the genetic material in bacteriophage T2.
What discovery did Watson and Crick make in 1953? Discovered the 3D structure of DNA
What discovery did Fraenkel-Conrat's group made in 1957? Showed that the RNA stores the genetic information in the tobacco mosaic virus.
What was Griffith's transformation experiment?
Created by: howardaaj
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