The Lake and Ponds Biome.
There are four naturally occurring nitrogenous bases, there are four different types of DNA nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). This sequence is broken into a series of three-nucleotide units known as codons. Each DNA sequence that contains instructions to make a protein is known as a gene.
Sequencing DNA means determining the order of the four chemical building blocks - called "bases" - that make up the DNA molecule. The sequence tells scientists the kind of genetic information that is carried in a particular DNA segment.
DNA sequencing was built upon earlier knowledge of DNA polymerases and cell-free systems for replicating DNA. The chain-termination method, which makes clever use of a "defective" DNA nucleotide, now dominates DNA sequencing technology.
To learn more about codons here
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Answer: Scientists think that early amphibians had lungs becuase they needed efficient oxygen uptake to support their metabolism. Higher rates of metabolism are needed on land, becuase of this scientist think that early amphibians breathed air with lungs.
Explanation:
i think its either d or b! go with d first tho <3
Answer:
C
Explanation:
Not A: During April and August, photosynthetic activity was high.
Not B: The rate of photosynthesis decreased from June to December.
Not D: Photosynthetic activity increased from January through June.
C: May and June have the highest rates of activity.