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IrinaK [193]
2 years ago
11

Long before the structure of DNA was solved, the physicist Erwin Schrodinger suggested that the three-dimensional arrangement in

some polymer had to explain the two main properties of heredity: 1) the stability of life, such that traits were passed faithfully from generation to generation, and 2) the mutability of life, such that traits could change. How did Watson and Crick’s structure explain those two properties?
Biology
1 answer:
Georgia [21]2 years ago
3 0

Watson and Crick's model explained mutability because bases pairs can suffer changes (mutations) during DNA replication. Moreover, this model also explained stability because DNA strands are held together by hydrogen bonds.

Deoxyribonucleic acid (DNA) is a double helix molecule composed of two long chains of four types of nucleotides, each containing one different nitrogenous base, i.e., Adenine, Guanine, Cytosine and Thymine.

In Watson and Crick's model, both DNA strands are held together by hydrogen bonds between nitrogenous bases on opposite DNA strands, thereby providing stability to the DNA molecule.

In DNA, Guanine always pairs with Cytosine by three hydrogen bonds, while Adenine always pairs with Thymine by two hydrogen bonds.

Moreover, Watson and Crick suggested that mutations could occur as a consequence of a base occurring very infrequently in one of the less likely tautomeric forms during DNA replication, thereby also explaining the mutability of life.

Learn more in:

brainly.com/question/762661

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Answer: True

Explanation:

The role of afferent neurons is to send the impulses from the central nervous system (and its sensory input received) to the rest of the body.

7 0
3 years ago
What are the weakest of all scientific findings? Group of answer choices Case studies Correlational studies Experimental studies
goldenfox [79]

Answer:

The weakest of all  scientific findings are given by case studies.

Explanation:

Case studies are observational or descriptive studies focalized on the analysis of a particular object (an individual, place, event, etc.) in a specific situation. Beacuse of its descriptive nature, it does not provides information about cause-effect relationships and does not consider the effect of random variations. It is the weakest of all scientific findings.

Correlational studies involves measurements of at least two different variables and try to identify if there is a specific relationship between variables, it means if there is a specific trend in the variation of one variable as a response to the variation in the other one (for example, when the temperature of a given solution increases, the solubility of the solute also increase). Although this kind of studies does not provides information about cause relationships, the trend between variables are well stated.

Experimental studies are the ones in which a researcher makes sure of providing a controled environment and manipulates a particular variable to see responses of one or more different variables. These studies provides well supported information.

Epidemiological studies the purpose to analyze all the factors involved in an epidemic (causes, incidence, evolution, etc.). It includes observational and experimental studies that complement each other. Because of the importance of these reasearch on public health, their scientific findings are well stablished and supported.    

Summarizing, the weakest of all scientific findings are provided by case studies.

6 0
3 years ago
What is the percent of hydrogen in cu(C2 H3 O2)
OLga [1]

Answer:

34.986%

hopefully this helps!

5 0
3 years ago
a person's____will be the same on Jupiter and earth, a person's_____will be greater on Jupiter than on earth.​
NemiM [27]

Answer:

A person's mass will be the same on Jupiter and Earth, a person's weight will be greater on Jupiter than on Earth.

Explanation:

Mass is universal, meaning it can't change, but weight is used to measure how heavy something is, so, on a planet like Jupiter, since the gravity is more, you'll weigh more there.

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3 years ago
12. Which of the following would exert pressure on a population of squirrels?
nevsk [136]
D. All of the above
6 0
3 years ago
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