Gene therapy, which includes the correction of defective genes, is a significant part of the human genome project. which of these is an application of the technique?
a: a new protein, which can repair defective genes, is injected.
b: mutated dna sequences, which can pair with existing genes, are introduced.
c: the dna sequences of the entire genomes of disease-causing microbes are compared.
d: a new gene, which codes for the protein that can repair defective genes, is introduced.

Joe is breeding cockroaches in his dorm room. he finds that the average wing length in his population of cockroaches is 4 cm. he chooses the six cockroaches that have the largest wings; the average wing length among these selected cockroaches is 10 cm. joe interbreeds these selected cockroaches. from earlier studies, he knows that the narrow-sense heritability for wing length in his population of cockroaches is 0.6. a. calculate the selection differential and expected response to selection for wing length in these cockroaches. b. what should be the average wing length of the progeny of the selected cockroaches?

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because

What materials must dams have to produce electricity, and what must occur?