When matthew saw his older brother's bicycle fall off its kick stand, matthew told his brother that the bicycle must be tired from being ridden too much. matthew's statement illustrates the type of thinking that piaget referred to as a. centration. b. animism. c. preformal operations. d. conservation.

Joe is breeding cockroaches in his dorm room. he finds that the average wing length in his population of cockroaches is 4 cm. he chooses the six cockroaches that have the largest wings; the average wing length among these selected cockroaches is 10 cm. joe interbreeds these selected cockroaches. from earlier studies, he knows that the narrow-sense heritability for wing length in his population of cockroaches is 0.6. a. calculate the selection differential and expected response to selection for wing length in these cockroaches. b. what should be the average wing length of the progeny of the selected cockroaches?

How does natural selection change thephenotypes within a population over time?

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because