Here are data from several complementation experiments, involving rapid-lysis mutations in genes rIIA and rIIB. The strain designated L51 is known to have a mutation in rIIB. Phage Mixture ComplementationL91 and L65 NoL65 and L62 NoL33 and L47 YesL40 and L51 NoL47 and L92 NoL51 and L47 YesL51 and L92 YesL33 and L40 NoL91 and L92 YesL91 and L33 NoList which groups of mutations are in the rIIA gene and which groups are in the rIIB gene.

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. agouti x albino a) 1/2 albino, 1/2 agouti b) all agouti c) 3/4 agouti, 1/4 albino

Ascientific idea becomes valid when it is what?