You are an orange farmer. You are interested in growing oranges with thicker skins because they will hold up better when they are transported from the groves in California to the rest of the country. How can you use artificial selection to obtain oranges with the trait you desire? Draw three key steps in the process of artificial selection for thick-skinned oranges in the diagram below. For each step:
• Draw a picture.
• Write a sentence that describes your orange population.

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

The fluid mosaic model of the membrane proposed that membranes

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred