Consider ABO blood types: In many paternity cases the first test involves blood typing, since blood type is an easily detected genetic trait. In a paternity case, a man denies fathering a child of blood type O. He is blood type AB and the mother is blood type O. Based on this test, could the man have fathered the child with type O blood? Why or why not? If the man were of blood type A and the mother of type O, would the conclusion be any different? Why or why not? Is blood typing conclusive evidence for proving paternity? Show your work. During the cell cycle, cells double their chromosomes and then return to their original state by mitosis and cytokinesis. The result is that the daughter cells end up with the same number of chromosomes as the parent cell. Another way to maintain the number of chromosomes would be to carry out cell division first so that each daughter cell has half of the chromosomes, and then replicate the chromosomes in each daughter cell. Would there be a problem with this alternative? or would this be an equally efficient way of organizing the cell cycle? Explain. A wild-type fruit fly (hetero zygous for gray body color and normal wings) is mated with a black fly with vestigial wings. The offspring have the following phenotypic distribution: wild type: 778: black-vestigial: 785: black normal: 158: gray-vestigial 162. What is the recombination frequency between these genes for body color and wing size? Show all of your work. Genes A, B, and C are located on the same chromosome. Test crosses show that the recombination frequency between A and B is 28% and between A and C is 12%. Can you determine the linear order of these 3 genes on the chromosome? Explain and draw the map if you can. Edible bananas are sterile, hybrid plants and are the result of a cross between 2 wild species, Musa acuminata and Musa balbisiana, Musa acuminata has a total of 22 chromosomes, whereas M. balbisiana has a total of 44 chromosomes. Use what you know about meiosis to predict the diploid chromosome number of the edible banana. Propose an hypothesis and explanation for the inability of the edible banana to reproduce. In mammals, coat color is affected by a variety of genes. One of these is a mutant gene that results in the complete loss of pigment or albinism. Another controls the type of dark pigment with alleles to black or brown coat. The