The ability to taste the chemical PTC is determined in humans by a dominant allele T, with tasters having the genotypes Tt or TT and non-tasters having tt. If you discover that 36 percent of the members of a population cannot taste PTC, then according to the Hardy-Weinberg rule, the frequency fo the T allele should be:

a. 0.4
b. 0.6
c. 0.64
d. 0.8

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

Which enzyme is responsible for “unzipping" the dna by breaking the hydrogen bonds between the nucleotides?

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.