Answer:
The normal role of this control element can be that of a negative modulator or regulator
Explanation:
For example, the lactose operon in the bacteria <em>Escherichia coli</em> is negatively regulated. In lactose absence a represor protein is produced, which inserts in the DNA operator site blocking transcription of structural genes. if for example a mutation affects the synthesis of this repressor, expression of structural genes will increase with no regulation.
A mutation in the DNA operator site that avoids insertion of the repressor, too.
A mutation in the gene that codes for the repressor, will also do the job
According to Peter Berger, there are four major characteristic of modernization. They are
1. The expansion of personal choice.
2. The decline of traditional and small communities
3. Increasing social diversity
4. Growing awareness of time and orientation towards the future.
I hope this answers your question.
The answer is A.only autotrophs can convert solar energy into chemical energy.
<span>Flakes or dry patches made up of excess dead epidermal cells are a known as scales. </span>
The answer is; the cell could not pair homologous chromosomes during meiosis.
For meiosis to occur, the sister chromosomes pairs line up in the metaphase-plate so that each chromosome of the pair is pulled to the opposite pole by the spindle in anaphase. Therefore, meiosis can only occur in cells with normal ploidy so the ploidy halved by meiosis.
