28.
a) A structure that was made if two chains of nucleotides, each in a helix, with each chain running parallel to each other. Also proved that the nucleotide bases could pair up in only one way based on Chargaff’s rule.
b) Franklin’s x-ray diffraction photographs showed that the wet form of DNA likely had a double helix. Wilkins showed Watson Franklin’s results and at the time Watson and Crick were experimenting with many potential models of having 1,2 or even 2 strands. As soon as Watson saw the double helix, he knew the double strand model was correct.
29.
DNA contains phosphorus but very little sulfur and protein contains sulfur but very little phosphorus. Hershey and Chase injected bacteriophages in an organism. When the bacteriophage was injected with sulfur it didn’t show the genetic material as a protein, but when injected with phosphorus the bacteriophage obtained a radioactive reaction. The primary factor is that DNA contains no sulfur and proteins contain no phosphorus. thus, since the bacteriophage is just made of a protein capsid and DNA enclosed on, can label either as phosphorus or sulfur with their …show more content…
The marketing of GMO foods has resulted in a scientific and public debate. Within this debate there has been many concerns regarding the safety of the environment and the food of GMO crops, although there are many potential benefits of genetically engineered agriculture to improve the quality and reliability of food supply (M. Buiatti, 2013).
There are 2 points that have been expressed within this debate. Recombinant DNA technology has been seen as a tool to enhance crop productivity and the quality of food. GMOs may be able to reduce the use of pesticides, save fossil fuels and decrease the amount of CO2 emissions (M. Buiatti, 2013). GMOs are also seen as a way to combat world hunger as they can be produced in large quantities and are developed to be drought and pest
a) A structure that was made if two chains of nucleotides, each in a helix, with each chain running parallel to each other. Also proved that the nucleotide bases could pair up in only one way based on Chargaff’s rule.
b) Franklin’s x-ray diffraction photographs showed that the wet form of DNA likely had a double helix. Wilkins showed Watson Franklin’s results and at the time Watson and Crick were experimenting with many potential models of having 1,2 or even 2 strands. As soon as Watson saw the double helix, he knew the double strand model was correct.
29.
DNA contains phosphorus but very little sulfur and protein contains sulfur but very little phosphorus. Hershey and Chase injected bacteriophages in an organism. When the bacteriophage was injected with sulfur it didn’t show the genetic material as a protein, but when injected with phosphorus the bacteriophage obtained a radioactive reaction. The primary factor is that DNA contains no sulfur and proteins contain no phosphorus. thus, since the bacteriophage is just made of a protein capsid and DNA enclosed on, can label either as phosphorus or sulfur with their …show more content…
The marketing of GMO foods has resulted in a scientific and public debate. Within this debate there has been many concerns regarding the safety of the environment and the food of GMO crops, although there are many potential benefits of genetically engineered agriculture to improve the quality and reliability of food supply (M. Buiatti, 2013).
There are 2 points that have been expressed within this debate. Recombinant DNA technology has been seen as a tool to enhance crop productivity and the quality of food. GMOs may be able to reduce the use of pesticides, save fossil fuels and decrease the amount of CO2 emissions (M. Buiatti, 2013). GMOs are also seen as a way to combat world hunger as they can be produced in large quantities and are developed to be drought and pest