In your own words, explain how a person may taste the bitterness of PTC by using the following vocabulary words in your explanation (choose any order): trait, gene, genotype, phenotype, and alleles.

Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide

What condition is kept close to its set point in osmoregulation? a. body temperature b. platelet count c. blood glucose level d. water balance

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii