The area of the A band in the sarcomere consists of O z line, H band, M line
O M line, H band, zone of overlap
KAN
O thin filaments only
O overlapping thick and thin filaments

In a cladogram' when does a group of organisms branch off

Are the earth's ocean floor and continents the same age geologically? why or why not?

Use this dichotomous key for insect identification to identify the insect shown. 1. a. insect has one pair of wings. order diptera 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 the insect pictured is in the order diptera. ephemeroptera. coleoptera. odonata.