Answer:
Decreased transcription of structural genes of try operon irrespective of presence or absence of tryptophan. The leader sequence has a tryptophan codon in its sequence 1 that does not allow the formation of attenuator structure when tryptophan levels are low.
Explanation:
The leader peptide has a tryptophan codon in sequence 1. When tryptophan levels are low, translation of sequence 1 pauses at the tryptophan codon and the sequences 2 and 3 pair with each other. This does not allow pairing of sequences 3 and 4 and the formation of the attenuator is inhibited. Therefore, tryptophan operon is expressed when tryptophan levels are low.
When the leader peptide sequence is replaced with the one from phenylalanine operon, expression of tryptophan operon will be reduced. The replaced sequence lacks a tryptophan codon and therefore, the translation would not pause when the tryptophan levels are low. This would allow the ribosome to quickly translate the sequence 2. Sequences 3 and 4 will pair to form attenuator and the gene expression will be reduced irrespective of low levels of tryptophan.
Yes I think they are all examples of solids I hope this helps you
All of the biochemical process occurring in an organism are referred to the organism's metabolism. Metabolic reactions are necessary for the maintenance of an organism's health and proper function. The main purposes of these reactions are:
1) conversion of food to energy
2) conversion of food to material for growth
3) removal of nitrogenous wastes<span />
It makes a baby
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Genetic drift is such type of mutation that may become more common in the population and over time due to the process
Genetic drift is describes as the random fluctuations in the numbers of the gene variants in a population. Genetic drift may takes place when the occurrence of the variant forms of the gene, called as alleles, increases and also decreases by chance over time. These variations is the presence of alleles are to be measured as the changes in allele frequencies. In the population, the different of alleles that create the coat color are equally distributed. for example A disease which comes into the rabbit population and kills the 98 of the rabbits. The only rabbits that are is left are red and grey rabbits, simply by the chance. The genes have thus called “drifted” from 6 alleles to only 2.
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