Yes, Zac Brown is indeed the lead singer of the Zac Brown band.
Crossover definition, a bridge or other structure for crossing over a river, highway, etc. See more.
(For example, one phenotype of a pea plant is having purple flowers.) A dihybrid cross is a cross between two individuals that are both heterozygous for two different genes. A hybrid is just the offspring produced when two genetically different parents are crossed.