Predict the phenotype for expression of the E. coli trp operon enzymes for the following mutants: a) A to U mutation at position 48 of the trp operon leader RNA. b) Deletion from positions 114-121 of the trp operon leader RNA. Explain your predictions taking into account the alternate stem-loop structures of the leader RNA.

The question is asking us to choose the true statement among: ? Girls get most of their traits from their moms; boys get most of their traits from their dads. - this is not true, most traits are inherited from both parents Male offspring will always have an X-linked genetic disease if the mom is a carrier. - this is not true, as they can inherit the non-affected gene Fathers always determine the gender of the offspring in humans. - this is true! some spermcells carry the Y and some the X genes that determine the gender Males never have Y chromosomes. - this is false, males always do!