Alexander fleming was a biologist who was best known for his discovery of the antibiotic penicillin. during his research, dr. fleming noticed that there was no bacterial growth where there was mold growing on his petri dishes. he could have thrown out his plates, but instead he cultured the mold. how did dr. fleming’s creativity lead to a scientific discovery? he noticed that bacteria cells and mold coexisted well. he observed that bacterial cells had become mold. he concluded that the mold inhibited the growth of bacteria. he inferred that mold and bacteria share most of their dna.

Cedure,© data: rmativetable 1: positive and negative results when imacromoleculeregative results when testing for the presence of macromoleculeschemical test | positive test result negative tcarbohydrates – simplesugarse negizitivecarbohydrates – 2: results for the presence of macromolecules in the evidence sample

Two male mice, which we will call male a and male b, are both phenotypically normal. male a was from a litter that contained half phenotypically normal mice and half dwarf mice. the mother of male a was known to be homozygous for the normal igf2 allele. male b was from a litter of eight mice that were all phenotypically normal. the parents of male b were a phenotypically normal male and a dwarf female. male a and male b were put into a cage with two female mice that we will call female a and female b. female a is a dwarf and female b is phenotypically normal. the parents of these two females were unknown, although it was known that they were from the same litter. the mice were allowed to mate with each other, and the following data were obtained: female a gave birth to three dwarf babies and four normal babies. female b gave birth to four normal babies and two dwarf babies. which male(s)mated with female a and female b? male a with both females male a with female b, and male b with female a male a with female a, and male b with female b could not be determined male b with both females

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?