It confirmed the double stranded structure of the DNA.
Explanation:
Watson and Crick created the DNA model that showed the DNA is a double stranded and helical molecule.
Rosalind Franklin is best known for her work on the X-ray diffraction images of DNA. Especially her x-ray numbered photo 51.
It was very instrumental to Watson and Crick in deducing the double helix model of the DNA. The photo showed a clear diffraction pattern of the crystallized DNA.
<em>Reduction in populations of insect pests is a benefit of crop rotation.</em>
Croprotation is an agricultural practice in which different crops are grown in different seasons on the sample piece of land in order to avoid the depletion of a single type of nutrient from the soil.
This practice is beneficial in reducingthe pests in the field because if only one kind of crop is grown then the pest that feeds on it will grow in number, however, due to crop rotation, the crop that is grown is chosen in such a way that same pest does not feed on it.
For example, if cotton and legumes are grown in rotation, then the pest of cotton cannot feed on legumes and hence it will not build in the field.
The chart that shows all the possible combinations of alleles that can result from a genetic cross is called a Punnett Square! I've attached an example of one to this answer.
