Green lizards were observed in the region in the image. changes in the geography of the region caused the formation of a stream, which divided the region into two halves. the left half developed a dark green environment, and the right half a comparatively lighter green environment. as a result, two geographically isolated populations, dark and light green lizards inhabited either side of the stream. the region on the right has more light green lizards as a result of . the new species will develop by way of . 1. a. natural seletion b. postzygotic isolation c. harmful mutation 2. a. sympatric speciation b. allopatric speciation c. convergent evolution

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.