1- Activate segmentation genes
dorsal and bicoid
later morphogenes
ddp and twist
eve and ftz

2- Krupel mutants
have no eve stripes
have no ftz stripes
lack wingless
lack hedgehog

3- Regulate each other to give definition to an initially irregular pattern of expression
Kruppel and bicoid
eve and ftz
Kruppel and hundgback
wingless and hedgehog

4- Found in promoters of genes that regulate each individual segment/parasegment
GAP gene enhancer
embryonic cis-acting element
gene regulatory module
bicoid responsive trans-element

5- Products of egg-polarity genes provide ___ for regulation of the expression of segmentation genes
global positioning values
location of pair-rule gene expression
combined gradients of signals
location of segment polarity gene expression

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Answers:

1- Activate segmentation genes
Answer: dorsal and bicoid

2- Krupel mutants
Answer: have no ftz stripes

3- Regulate each other to give definition to an initially irregular pattern of expression
Answer: eve and ftz

4- Found in promoters of genes that regulate each individual segment/parasegment
Answer: gene regulatory module

5- Products of egg-polarity genes provide ___ for regulation of the expression of segmentation genes
Answer: global positioning values