How can foodborne illnesses caused by parasites best be​ prevented? a. keep food handlers with colds out of the operation. b. sanitize all food contact surfaces after prepping tcs food. c. purchase products from approved suppliers. d. exclude staff who have jaundice from the operation?

In fruit flies, gray bodies (g) are dominant over black bodies (g), and brown pigments (n) are dominant over yellow pigments (n). each individual possesses two alleles for each trait. if a fly that is homozygous dominant for both traits is crossed with a fly that is homozygous recessive for both traits, what is the predicted genotype of the offspring.

Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. a few months later, she accomplishes this same task relatively easily. the change in abilities is most likely due to

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.