Answer:
The Lac repressor is preventing genes being expressed most of the time.
Explanation:
The Lac repressor protein, LacI, prevents the transcription of genes involved in lactose utilization.
The amino acid sequence for the following DNA sequence is Met-Ser-Cys-His.
<h3>What is transcription and translation?</h3>
Transcription is the process of conversion of genetic information carried by the DNA into messenger RNA (mRNA).
- Sense strand of DNA is the one which runs in 5’ to 3’ direction and carries the information while antisense strand runs in 3’ to 5’ direction and serves as a template.
- E.g.: Antisense strand 3′−TACAGAACGGTA−5′
mRNA sequence 5’−ATGTCTTGCCAT−3’
Translation is the process of conversion of information carried by the mRNA into an amino acid sequence.
- The genetic code is read as a sequence of 3 nucleotides together at a time and is called codon.
- For example: 'ATG' is a start codon coding for methionine.
Here, mRNA sequence 5’−ATGTCTTGCCAT−3’
Amino acid sequence: Met-Ser-Cys-His
Learn more about genetic code here:
brainly.com/question/16914106
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Answer:
Explanation:
Bloodletting was proven to prevent illness and is widely used now.
If it goes in the nostrils the air is warmed and humidified. The tiny hairs) protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.
