John wanted to find out which laundry soap was best for removing grass stains. each soap was mixed with warm water. it was then used to scrub a piece of grass-stained cloth for 1 minute. then the amount of stain left on the cloth was measured.
what is the dependent variable?
a. water temperature
b. laundry soap
c. amount of stain left on cloth
d. scrubbing time for each cloth

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.

Choose the correct words to complete the sentences related to genetic screening. is a procedure that is used during pregnancy to detect genetic defects. is extracted from the uterus and used to identify genetic disorders?