1. A(n) is an inherited feature that varies from individual to individual. 2. A(n) is one particular variation of a character. 3. Most human genes come in alternate versions called . 4. If an organism has two non-identical versions of a gene, the one that is expressed in the organism is called the allele. 5. If an organism has two non-identical versions of a gene, the one that is not expressed in the organism is called the allele. 6. The physical traits of an organism are called its . 7. The is the genetic makeup of an organism.

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?

Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?