Another thermophile, thermus aquaticus, was isolated from a hot spring in yellowstone national park. it is the source of the enzyme taq polymerase, which is used in the molecular technique called polymerase chain reaction (pcr). pcr is used to amplify sequences of dna. what extremophile characteristic of this enzyme makes it an essential component in a pcr reaction?

Providing immunity by injecting the body with a weakened form a pathogen is known as

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

2. cheryl hears a new song on the radio every day during the week on her commute to work. surprisingly, when the song comes on at a party on saturday night, she knows most of the words without trying. describe the three ways that we use cognition to learn without reinforcement. which type of cognitive learning without reinforcement best explains how cheryl knew the song lyrics? explain your answer.