1- Parasegments in the drosophila embryo
are about 10 cells wide
correspond to developmental boundaries
correspond to anatomical features
are affected by egg-polarity genes

2- Not a class of segmentation genes
GAP genes
pair-rule genes
segment polarity genes
egg-polarity genes

3- GAP gene expressed in the earlier segments (head and upper torax)
hunchback
Kruppel
even-skipped
fushi-tarazu

4- Not true about pair-rule genes
act before GAP genes
affect alternating parasegments
combinations of their expression define unique regions once-cell wide
include even-skipped and fushi-tarazu

5- Affect a single parasegment
hunchback
Kruppel
eve
segment polarity genes

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Answers:

1- Parasegments in the drosophila embryo
Answer: correspond to developmental boundaries

2- Not a class of segmentation genes
Answer: egg-polarity genes

3- GAP gene expressed in the earlier segments (head and upper torax)
Answer: hunchback

4- Not true about pair-rule genes
Answer: act before GAP genes

5- Affect a single parasegment
Answer: segment polarity genes