| Answer | Crossword Clue |
|---|---|
| TOME | Audubon's "The Birds of America," e.g. |
| sunfishes | A nest-building freshwater fish that is native to North America and popular in aquariums, e.g., the pumpkinseed |
| heterogametic | Denoting the sex that has sex chromosomes that differ in morphology, resulting in two different kinds of gamete, e.g., (in mammals) the male and (in birds) the female |
| homogametic | Denoting the sex that has sex chromosomes that do not differ in morphology, resulting in only one kind of gamete, e.g., (in mammals) the female and (in birds) the male |
| SAGA | "The Thorn Birds," e.g. |
| GANG | The T-Birds in "Grease," e.g. |
