In many animal species, males attract female mates with behaviors such as singing, dancing, or giving a gift. As explained by Darwin’s theory of natural selection, are these behaviors examples of adaptations?

Yes. They are adaptations because they help animals with high fitness reproduce.

Explanation:

Based on the scenario being described within the question it can be said that yes, these are adaptations because they help animals with high fitness reproduce. In Darwin's theory adaptation is anything that has been passed down from generation which helps the organism survive in it's environment, and this includes being able to reproduce.

protist eukaryotes that are not plants, animals, or fungi ("misfits")

answer; a male inherits only one allele of the x-linked gene controlling hair color;