Fruit flies with one allele for curly wings (cm and one allele for normal wings (cy+) have curly wings. when two curly- winged flies were crossed, 203 curly-winged and 98 normal-winged flies were obtained. in fact, all crosses between curly- winged flies produce nearly the same curly : normal ratio among the progeny. a. whet is the approximate phenotypic ratio in these offspring? b. suggest an explanation for these date. c. if a curly-winged fly was mated to e normal- winged fly. how many flies of each type would you expect among 180 total offspring?

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.