In bacteria, what is the function of oxyS?
What will be an ideal response?
Ans: oxyS is transcribed to an sRNA that affects the expression of a number of genes. It acts by complementary base-pairing with RNA transcripts, either activating or repressing expression. In the case of the flhA gene transcript, base-pairing of the oxyS transcript prevents ribosomal binding and represses translation.
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In addition to the defining features of chordates, ALL craniates are distinguished by which of the following combination of features?
A. a cranium and a gnathostome B. a cranium and neural crest C. a cranium and protostome development D. a cranium and an ostracoderm E. a cranium and an operculum
A human body has about ________ cells.
A) 3.2 billion B) 20,600 C) 30 trillion D) 10 to 100 million
A gene is
A) a stretch of DNA coding for a polypeptide chain (sequence of amino acids). B) a microscopic, threadlike body within a cell. C) any heritable behavioral, morphological, or physiological trait of an organism. D) all of the DNA in a cell.
How can the banding patterns on Drosophila polytene chromosomes be used to aid deletion mapping of genes on the chromosomes?
What will be an ideal response?