Use this dichotomous key for insect identification to identify the insect shown. 1. a. Insect has one pair of wings. Order Dipte
ra b. Insect has two pairs of wings. Go to #2 2. a. Front wings thicker in texture than hind wings Go to #3. b. Front and hind wings are same texture throughout. Go to #4 3. a. Front wings are short Order Dermaptera b. Front wings cover entire abdomen Order Coleoptera 4. a. Wings with scale on all parts of their area. order Lepidoptera b. Wings without scales Go to #5. 5. a. Hind wings smaller than front wings. Order Ephemeroptera b. Front and hind wings nearly equal in size. Order Odonata An insect with 2 pairs of wings is standing on a branch. The insect pictured is in the order Diptera. Ephemeroptera. Coleoptera. Odonata.
Option c. anterior-posterior axis is the right answer.
Explanation:
Bicoid is a maternal effect gene whose protein concentration gradient patterns the anterior-posterior (A-P) axis during Drosophila embryogenesis. it was the first protein demonstrated to act as a morphogen. See image having more explanation.
