Astrain of bacteria possesses a temperature-sensitive mutation in the gene that encodes the sigma factor. the mutant bacteria produce a sigma factor that is unable to bind to rna polymerase at elevated temperatures. what effect will this mutation have on the process of transcription when the bacteria are raised at elevated temperatu

The process of transcription will b stopped. Sigma factors are responsible for determining the specificity of promoter-DNA binding by polymerase and control how efficiently RNA synthesis (transcription) is initiated. High temperatures probably interfere with the structure of the sigma protein and change the conformation of the active site that binds to the rna polymerase.   

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

what is shown in the image?

eukaryote

chloroplast

mitochondrion

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