Based on their common ancestry, which of the following is most likely true about modern birds? a. modern bird species do not share any genetic similarities. b. modern bird species share many genetic similarities. c. modern bird species are all genetically identical. d. modern bird species cannot undergo evolutionary changes.

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d