To determine the genetic distance between the mutations in strains 6 and 7, e. coli b were simultaneously infected with both mutants 6 and 7. the phages produced by this lysis were collected. serial dilutions of these phages were then used to infect e. coli b and e. coli k12, and the results are shown below.

The image shows embryos of three vertebrate classes

List two modern organisms that have pentameral symmetry

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.