In a certain breed of cat, the allele for the color of blue eyes (E) is dominant over the allele for the color of brown eyes (e). If two cats that are both heterozygous are crossed with each other, which of the following genotypic ratios can be expected? 1 EE: 2 Ee: 1 ee
0 EE: 2 Ee: 2 ee
0 EE: 4 Ee: 0 ee
2 EE: 1 Ee: 1 ee

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.