When cpg islands are unmethylated,
a) chromatin in the promoter region is open, allowing access by transcription factors and rna polymerase
b) chromatin in the promoter region is closed, preventing transcription factors and rna polymerase from binding
c) chromatin in the enhancer region is closed, so they are unable to bind regulatory proteins to initiate transcription
d) dnase hypersensitivity in that region of the chromosome is lost
e) genes downstream of the cpg islands cannot be expressed, because the promoter region is blocked by histones

Some species of wasps are social. the queen starts a colony from scratch each spring. she builds a small nest, and lays and raises a group of female workers. the workers enlarge the nest while the queen continues to lay eggs. unfertilized eggs become males that mate with newly hatched females. all of the wasps except the newly fertilized females die by the summer. which best describes this behavior? a)it is beneficial only to the males that do not fertilize eggs. b)it is beneficial only to the female workers that are not fertilized. c)it is beneficial to each one of the individual colony members. d)it is beneficial to the whole species, but not to all of the individual members.