In corn, a dihybrid for the recessives a and b is testcrossed. The distribution of the phenotypes is as fol- lows: AB 122 Ab 118 aB 81 ab 79 Test the hypothesis that these genes are assorting independently using a chi-square test. Explain tentatively any deviation from expected values, and tell how you would test your explanation.

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit