Which of the following statements about crossing over is NOT true? occurs once in each pair of homologous chromosomes
takes place during Prophase I
produces a single chromosome with genetic information from both parents
occurs in random locations

What are chlorofluorocarbons made of

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?