A scientist is studying the effects of a chemical she believes to be a mutagen in Drosophila. Her treatment results in a forward mutation phenotype. To understand the molecular nature of this mutation, she attempts to reverse the mutation by treating the Drosophila mutant with hydroxylamine. However, this treatment has no impact on the mutant phenotype. Among the possibilities given below, the type of forward mutation her new mutagen most likely caused is a .

in situ hybridization has been widely used for research applications, including clinical cytogenetics, gene mapping, tumor biology and studies of chromosome evolution.

se

explanation:

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b