In the datura plant, purple flower color is controlled by a dominant allele p. white flowers are found in plants homozygous for the recessive allele p. a purple-flowered datura plant is self-fertilized, and its offspring are 27 purple-flowered plants and 9 white-flowered plants. if the 27 purple-flowered plants are self-fertilized, how many of the 27 would you expect to segregate both purpled-flowered and white-flowered plants in their offspring?

If a set of instructions that determines all of the charactersitics of an organism is comparedto a book, and a chromosme is compared to chaper in the book, then what might be compared to a paragraph in the book?

Is there any solid scientific evidence that humans have been cloned?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.