Comparisons of neanderthal dna revealed that there are more similarities to non-african dna than reference sequences from west africans. Additionally, scientists found that neanderthal dna is as closely related to east asians as to europeans. This indicates that interbreeding occurred before human migration further east. What process of population genetics generated these results?.

Alaska and northern canada have a diet rich in vitamin d and their skin color is darker than predicted on the basis of iv intensity at their latitude. explain the observation:

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.

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt