Question

A gray-body fly with long wings is subjected to a test cross. The F1 progeny of this test cross: Will only be of two phenotypes if the test cross fly is homozygous for both traits. Will only be of two phenotypes if the gray-bodied/long-winged fly is homozygous for both traits. Will be of four genotypes if the gray-bodies/long-winged fly is heterozygous for both traits. Will be of four genotypes if the test-cross fly is heterozygous for both traits. None of the above. If the disorder diagrammed in the pedigree above displays recessive inheritance (and carriers are NOT shown as half-shaded circles and squares), which of the following statements is true? Individual "C" has a 50% chance of being a carrier. The allele controlling this disease could not be sex-linked (on the "X"). Individual "A" has a 50% chance of being a carrier. The allele controlling this disease could not be on chromosome 7. There is more than one correct answer Now consider that the disorder in the pedigree above is inherited dominantly. Which of the following is true? The allele controlling this disease could not be sex-linked (on the "X"). Individual "E" has a 50% chance of being a carrier. Individual "C" has a 50% chance of passing the disease allele to her children. Individual "H" has a 100% chance of passing diseased allele to her son. This pedigree cannot document a dominantly-inherited disorder because too few individuals are affected.

Answer 1

11) b

12) e

13) b

eveny mals s Ge atteet o a Aa etion i het tue be cauje