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melomori [17]
3 years ago
10

Evolutionary relationships among organisms are most likely to be revised at the ________ level.

Biology
1 answer:
Sliva [168]3 years ago
8 0
Species.


Good luck! (:
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Levene made which contribution to our understanding of DNA structure? a. He determined that the nucleus contains DNA. b. He dete
Stels [109]

Answer:

The correct answer is  b. He determined that DNA contains four nitrogenous bases.

Explanation:

Levene was an American biochemist who studied the structure of DNA in the early 1900s and in 1920 he found that DNA consists of four nitrogenous bases that are Adenine, Guanine, Thymine, Cytosine.

He also found deoxyribose sugar and phosphate group and said that nucleotide is the basic unit of DNA which contains a ribose sugar with attached nitrogenous base and phosphate group.

He also concludes that an equal amount of adenine, guanine, thymine, and cytosine makes the DNA which is now known as tetranucleotide hypothesis. So the correct answer is b. He determined that DNA contains four nitrogenous bases.  

8 0
4 years ago
Which of the following common items would best represent the primary structure of a protein
Assoli18 [71]

The answer is; Beads of different color joined together on a piece of string

Primary structure of a protein is right after it has been translated from an mRNA by a ribosome. It is linear and has not yet been folded into a functional protein. The beads in the item represent amino acids joined together by peptide bonds.  


7 0
3 years ago
80 kg ____ 7910 g<br><br> a. &lt;<br><br> b. &gt;<br><br> c. =
DanielleElmas [232]

Hey!

80 kilograms is 80,000 grams!

7910 is only 7.910 kilograms!

Final Answer - 80kg > 7910g

Hope This Helps!

6 0
4 years ago
Read 2 more answers
DNA is copied in a process called:
d1i1m1o1n [39]

Answer: Transcription

Explanation:

Transcription is the process by which DNA is copied (transcribed) to mRNA, which carries the information needed for protein synthesis. ... The pre-messenger RNA is then "edited" to produce the desired mRNA molecule in a process called RNA splicing.

4 0
3 years ago
Are horseshoe carbs the oldest knob species of crabs
antiseptic1488 [7]

Answer: Yes they are

Explanation: plz mark brainliest

8 0
3 years ago
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