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
Alisiya [41]
3 years ago
14

1. After examining the DNA of different organisms, which of the following did Erwin Chargaff conclude about the four bases?

Biology
1 answer:
siniylev [52]3 years ago
4 0

Answer: a). A = T and C = G.

Explanation: Erwin Chargaff's rule states that in a double-stranded DNA molecule, the number of adenine is equal to the number of thymine and the number of cytosine is equal to the number of guanine. This means that there is a ratio purine to pyrimidine in a double-stranded DNA molecule is 1:1.

There are four bases found in the DNA: adenine, thymine, guanine and cytosine and according to the Watson and Crick base pairing rule, adenine pairs with thymine while guanine pairs with cytosine. Adenine and guanine are the purine bases while thymine and cytosine are pyrimidine bases.

You might be interested in
GIVES BRAINLIEST!
Juli2301 [7.4K]

Answer:

selective breeding...

that's it

5 0
3 years ago
Read 2 more answers
which of the following is not an abiotic factor in the prairie ecosystem a water b sunlight c grass d soil​
Lapatulllka [165]

Answer:

Grass

Explanation:

Biotic means living. There are some obvious abiotic factors here. The only gray area is what "soil" encompasses

grass-Biotic means living, all of the other choices are not living, and would therefore be abiotic factors

This is because it is a living thing (performs photosynthesis and cellular respiration).

Biotic means living, all of the other choices are not living, and would therefore be abiotic factors

5 0
3 years ago
Which is an abiotic factor of the boomslang's environment?
jonny [76]
A. The sun
Abiotic means fake or not living. Trees, grass, and people are living, also know as biotic. The sun is not living, it’s just a ball of hot gas, which is not living.
8 0
3 years ago
What are the four nitrogenous bases that make up DNA?
givi [52]

Answer:

The four nitrogen bases that are found in deoxyribonucleic acid (DNA) are adenine, cytosine, guanine, and thymine.

Thymine and cytosine comprise of one -carbon nitrogen ring and also called pyrimidines, while two carbon nitrogen ring is present in adenine and guanine and also called purines. Purines has larger in size because of extra carbon nitrogen ring.

6 0
3 years ago
A hypothetical bacterium swims among human intestinal contents until it finds a suitable location on the intestinal lining. it a
ivann1987 [24]

The bacterium is not susceptible to the penicillin family of antibiotics. it contains no plasmids and relatively little peptidoglycan. Adherence to the intestinal lining by this bacterium is due to its possession of a capsule.

5 0
3 years ago
Other questions:
  • How have useful traits been accumulated in plants and animals over the centuries?
    13·1 answer
  • An explosion is an example of a(n) ___________ reaction
    15·2 answers
  • What is biogeography and what does it provide?
    6·1 answer
  • The scientific method is a
    13·1 answer
  • Why would capillary action be critical for plants to survive?
    5·2 answers
  • A certain finch gets food by cracking seeds open. Its short, strong beak is<br> an example of:
    8·2 answers
  • Which rock may result when sedimentary rock is exposed to extreme heat and pressure? A metamorphic B extrusive C igneous D clast
    15·2 answers
  • Antibiotics, antimicrobial resistance and the control of disease - Essay
    11·1 answer
  • What is science DO NOT COPY AND PASTE!!!
    13·2 answers
  • An attraction between substances of the same kind is called___while an attraction between different substances is called___
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!