Leone Lattes devised a technique for determining the blood group of a dried bloodstain, which he applied to criminal investigations.
An easy technique for identifying the blood type of a dried bloodstain was invented in 1915 by the Italian scientist Leone Lattes.
In 1939–1940, the Rh blood group system—which divides blood into groups depending on whether the Rh antigen is present or not—was created. Since then, more than a hundred various blood factors have been identified.
These characteristics can be utilized to pinpoint the particular groups to which possible suspects may belong because they show up unevenly in the population.
As different blood factors are identified in a sample, the proportion of individuals who have that particular combination of factors decreases and the sample becomes more unique.
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Contaminants from farmland, factories, and cities Can runoff into our rivers. Chemicals like nitrogen and phosphorus can produce eutrophication. To help preserve the cleanliness of our water, we can reduce the use of fertilizers and other containments.
<span>September 1, 1939 – September 2, 1945
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Answer:
Explanation:
Here, cell C-2 needs to express GFP and therefore, GAL4 should be functional in cell C-2. This can be achieved by expressing GAL4 in Regulatory DNA construct 3, and expressing GAL80, an inhibitor of GAL4 in Regulatory constructs 1 and 2. This arrangement expresses GAL4 in columns A and C, and inhibits GAL4 due to GAL80 expression in Columns A and B; and in rows 1 and 3.
Therefore, the only cell that expresses GAL4 is cell C-2.
The arrangement is:
1. Construct 1 should express GAL80
2. Construct 2 should express GAL80
3. Construct 3 should express GAL4
4. Construct 4 should not be used
