Tommy and his sister Maria have the same parents but they do not look alike. Which of the following factors best explains why they have this genetic variation within their family? The separation of sister chromatids during telophase I.

The crossing over of genetic information during mitosis.

The independent assortment of genetic information during anaphase I.

The exchange of genetic information as chromosomes line up during metaphase II.

Based on the results of this study, what questions remain unanswered? how can these questions guide future research

What did hunter gathers do to alter the environment?

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.