Horns of mountain goat. Males fight for females by butting heads, crashing horns Both males and females have horns all year. Antlers of white-tailed deer. Males fight for females by locking antlers and shoving. Only males have antlers, only in mating season.
Males shed their antlers in the winter.
Antlers regrow in summer and are fully grown by the fall mating season. Give an example. Trait A causes individuals to live longer but to produce fewer offspring that live long enough to reproduce themselves, and Trait B causes individuals to live a shorter life but produce more offspring that survive to reproduce themselves. G. Genetic drift 1. Define genetic drift.