The expected genotypic ratio of the offspring of a SsYy X ssyy test cross is
A.) 9:3:3:1
B.) 3:1
C.) 1:1:1:1
D.) 1:2:1

1. isogamy 1 organisms with gametes of the same size and shape 2. anisogamy organisms with gametes of different sizes and shapes 3. oogamy 2 organisms with gametes of the same shape but different sizes 4. gonads gamete-producing organs in lower plants 5. gametangia gamete-producing organs in animals