Which best summarizes the findings of griffith? o a. humans reproduce sexually. o b. traits cannot be inherited. o c. cells contain a transforming factor. o d. all alleles are heterozygous.

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.