1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
xxTIMURxx [149]
2 years ago
9

Which of the following did Watson and Crick already know when they were trying to determine the structure of DNA? The number of

_____. Which of the following did Watson and Crick already know when they were trying to determine the structure of DNA? The number of _____. guanines is always the same as thymines pyrimidines is always larger than purines cytosines is always the same as adenines purines is always larger than the number of pyrimidines purines is always the same as pyrimidines
Biology
1 answer:
Andre45 [30]2 years ago
7 0

Watson and Crick already knew that the number of purines is always the same as pyrimidines.

The scientists that contribute to discovery of DNA and its complete structure:

•  Friedrich Miescher-was the first who found DNA inside the nucleus (first it was called nuclein) while he was trying to discover the protein components of leukocytes (1869)

• Phoebus Levene- was the first who discovered three major components of a nucleotide (1919)

• Erwin Chargaff –discovered that the total amount of purines (A + G) and the total amount of pyrimidines (C + T) are nearly equal (Chargaff’s rule) (1950)

• Rosalind Franklin and Maurice Wilkins, did an important X-ray crystallography work that contributed to Watson and Crick's discovery of double-helical model for the structure of DNA.

You might be interested in
The fruits have several purposes. Which purposes might be similar to those of a cone?
prisoha [69]

Answer:

Flowers and cones have different structures. Cones when mature have a woody texture and is made up of scales while flowers have colorful petals, sepals and both male and female reproductive portions are called stamens and pistils.

Explanation:

4 0
3 years ago
Which would be appropriate to include in teaching a client with type 2 diabetes?
valkas [14]
<span>It is possible with weight loss and exercise to discontinue the use of antidiabetic medication.</span>
6 0
3 years ago
One example of qualitative data that can be collected when using a microscope
Verizon [17]

Answer:

Qualitative and quantitative are two research technique that used in microbiology to collect the data information. These are very useful techniques.

Explanation:

There are several technique has been used in microbiology in collecting data. There are qualitative and quantitative collection of data. Qualitative data tells about data intent in yes or no form. The other techniques such as quantitative technique which provide information about the numerical value of data.

Qualitative technique is used in research would collect data on growth of the bacterial sample on the solid growth of the sample. It is used to assess whether the bacteria in the data is living or dead. It reveals the wealth of the qualitative information of data. The observation of microorganism in microscope get information whether the organism is in propelled motion or its dead.

7 0
3 years ago
It is unethical for a doctor to _____.
quester [9]

Release a patient information without consent

4 0
3 years ago
Read 2 more answers
Life span development class
IceJOKER [234]
True.
I know this because it happened to my family and friends families. Sorry if it’s wrong
3 0
3 years ago
Other questions:
  • a map has a scale of 1 cm 12 km. on this map,what is the distance between two locations that are actually 30 km apart?
    8·1 answer
  • What should be done after a spill is wiped up with a cloth?
    15·1 answer
  • What electron carrier is used in the redox reactions in cellular respiration
    15·2 answers
  • A body of cell that is undergoing abnomal cell division is mostly
    8·1 answer
  • What is laws and thoerys
    6·2 answers
  • Match the term with the most appropriate definition.
    6·1 answer
  • Where would you most likely find water molecules​
    14·1 answer
  • What are the three parts of the cell theory
    12·2 answers
  • Which organisms are multicellular, eukaryotes, and autotrophs?
    10·2 answers
  • Would a cell that did not undergo cytokinesis be able to function properly? Explain.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!