The answer to this question is true
Answer:
- The mRNA code for each type of amino acid is a sequence of <u>three</u> nucleotides, called a codon.
- mRNA codon that codes for the amino acid Phe es UUU.
Explanation:
The messenger RNA (mRNA) has in its structure sequences of 4 nucleotides adenine, uracil, guanine and cytosine. The possible combinations of these nucleotides to group into triplets is 64 codons to form 20 amino acids, from which it can be concluded:
- <em>An amino acid can be encoded by more than one codon.
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- <em>From these combinations the three STOP codons are obtained.
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A mRNA codon is a sequence of three nucleotides that serves to encode an amino acid.
Phenylalanine (Phe), according to the image, is formed with the UUU codon.
They tell cells the specific sequence of amino acids for making a protein.
Answer: If a restriction enzyme makes a staggered cut in dna, then <u>Sticky</u> <u>ends</u> are created.
Explanation: Restriction enzyme cut the DNA molecule into fragments. So the Sticky and blunt ends depends how the restriction enzyme cut the DNA.
Staggered cut in the DNA make Sticky ends and Straight cut in the DNA make blunt ends.
<u>Answer</u>: c) bottleneck effect
<u>Explanation</u>: The significant reduction in genetic variation due to a major decrease in population's size for at least one generation is called a bottleneck effect. Although the population can recover, the low genetic variation will still pose a significant risk for the long term survival of the species.
