Crossingover is the exchange of genetic information between (homologous chromosomes that occurs during meiosis).
1. sex chromosomes
2. sister chromatids
3. chromatids
4. homologues.

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.

Describe characteristics of a good respitory surface

Animals that have thick fur and ae able to store large amounts of body fat live where ?