PLEASE HELP!!! Purple is dominant to white flowers and round seeds are dominant to wrinkled. These traits are on nonhomologous chromosomes. Two pure breeds are mated to produce the F1 generation. The F1 are allowed to self fertilize. If 500 offspring (seeds) are produced, how many of the 500 will have purple and round seeds? give answer to nearest whole number

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d. the size of the geographic area inhabited by a population can cause speciation.

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

The solution inside a plant cell is approximately a 1% saline solution and a 21% nacl solution the ,cytoplasm of a plant cell will