Dựa vào cơ sở nào để biết tính trạng đó di truyền liên kết với giới tính

The trp operon in e.coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.

The cluster of developing cells from conception until birth is called an

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi