When is dna replicated in a cell?

Barbara is converting 78°f to degrees celsius. first, she subtracts 32 from 78. what is the next step?

The image shows embryos of three vertebrate classes

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.