Which of these statements is correct about light?

a. it travels slower than sound.
b. it travels slower than electric charges.
c. it travels the fastest through water.
d. it travels the fastest through a vacuum.

How does the study of genetic disorders such as pku biologists understand normal alleles?

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.

Name the glands associated with human digestive system