James Watson and Francis Crick, along with the help of Rosalind Franklin's X-ray crystallography data, are credited with first identifying the structure of DNA as a double helix.
The identification of the structure of DNA as a double helix is one of the most significant discoveries in the history of biology. In 1953, James Watson and Francis Crick, both scientists at the University of Cambridge, proposed the double helix model for DNA based on their understanding of its molecular properties and the X-ray crystallography data provided by Rosalind Franklin and her colleague Maurice Wilkins.
Rosalind Franklin, a talented biophysicist, used X-ray crystallography to study the molecular structure of DNA fibers. Her X-ray diffraction images, including Photo 51, provided crucial insights into the helical nature of DNA and its dimensions. Although she did not directly contribute to the final model proposed by Watson and Crick, her work was instrumental in guiding their understanding of DNA's structure.
In April 1953, Watson and Crick published their landmark paper in the journal Nature, titled "Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid." In this paper, they described the double helix model of DNA, with the two strands forming a twisted ladder-like structure, and the base pairs holding the strands together like rungs on the ladder.
The identification of DNA's structure as a double helix provided a crucial foundation for understanding how genetic information is stored and transmitted in living organisms. This discovery paved the way for advancements in genetics, molecular biology, biotechnology, and other fields, transforming our understanding of life at the molecular level and earning Watson, Crick, and Wilkins the Nobel Prize in Physiology or Medicine in 1962.
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Answer:
Friedrich Miecher was the Swiss chemist who first identified DNA in 1860. It was first identified in the nuclein which is found inside nuclei of the human white blood cells. The nuclein was later on named as nucleic acid. The type of nucleic acid was identified as deoxyribonucelic acid.
Bicep curls 3 reps @ 15 lbs, 20 push-ups
Tuesday
Kettle bell swings 5 reps @ 15 lbs, 90 second plank
Wednesday
Yoga class
Thursday
Sit-ups 50, 20 push-ups
Friday
Bicep curls 6 reps @15 lbs, 90 second plank
Saturday
30-minute easy run
Sunday
Rest
A. Intensity
B. Tedium
C. Reversibility
D. Progression
Answer : Option B) Tedium.
Explanation : As it is clearly observed from Martin's workout schedule that it is lacking in intensity or progression, which is a subjective matter and basically depends upon the base level of strength and fitness that his body is capable of.
With the shared schedule of Martin's, it shows that he is trying to avoid tedium,which is tedious exercises for his body; as he has included many variety of different activities into his weekly routine but which lacks on tedium exercises.
In the case above, he is most likely trying to avoid the Intensity during his workouts.
This is known to be a form of subjective measure that is said to tell how difficult physical activity is to a person.
In the case above, he is most likely trying to avoid the Intensity during his workouts.
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Answer: the answer is None Of The Above
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(B) a community.
(C) a population.
(D) a mutualism.
(E) a biome
Answer:
The correct answer is option (B) "a community".
Explanation:
A biological community is defined as a group of organisms from various species that interact within a defined location. A biological community is one of the smallest categories of ecology, since it comprises a small location and the interaction of few species. An example of a biological community is the group of some organisms living in a vacant lot include grass, dandelions, mice, grasshoppers, and slugs.