Which conditions are required for natural selection to happen? Select all that apply. •Individuals of a population have a variation of heritable characteristics that can be passed down to
offspring
•In a particular environment, certain versions of heritable traits help individuals survive better or reproduce
more than other versions of the trait.
•In any environment, certain versions of heritable traits help individuals survive better or reproduce more
than other versions of the trait.
•There must be individuals in the population who are physically stronger than the rest.

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells

Where in the cell are ribosomes made?