Gray wolf (common ancestor) Europe North America China India European toy dogs Mastiffs Arctic spitz Amorican dogs Native Torriors Foral dogs Chow chow Oriontal toy dog Sight hounds Scont hounds Bulldog Afghan hound Pug Saint Bernard Great Dane Gun dogs Asian Dingo Borzoi Spaniels pariah dogs

Definitions: 1. Based on the outcome of natural selection, describe four different modes of natural selection. Provide one example for each mode. Each example must be different from the ones taught in lecture and lab ppt.

results in condensed chromatin, which makes DNA inaccessible, and results in open chromatin, which makes DNA accessible. Oxidation; Nitrification OAcetylation; methylation O Methylation; acetylation O Nitrification; oxidation

What result in adaptation comes from natural selection?

Consider this example. On a tropical island, there are iguanas that are green, blue, and yellow. The green iguanas can camouflage in the green grass, the yellow iguanas can camouflage in the dry, yellow grass. And the blue iguanas try to run fast to get away from prey. Over time, the blue iguanas disappear on the island, while the green and yellow iguanas survive. What type of natural selection is this?    A. Balancing or Stabilizing selection   B. Disruptive or Diversifying selection   C. Directional selection   D. Sexual selection

What is the difference between “ancestral traits” and “derived traits”?What is the biological definition of a “species”?

Explain: "Mutation is random;natural selection is the very opposite of random"

Student 1: Artificial selection is done on humans and this creates mutations . Student 2: Artificial selection has only recently been done by scientists. Student 3: Different breeds of cows have been created through artificial selection Which student do you agree with the most and why?

What are the similarities and differences between natural selection and selective breeding?