In mermaids, blue hair (B) is dominant to silver hair (b). If a mermaid has a genotype of BB, how many alleles does she have for the Blue hair gene?

Since a female is both xx chromosome and the male passes down the x chromosome, than the offspring would be female since a female is xx.

B] nitrogen fixationmight be wrong, so correct me.want extra on your answers? just go on my account and go on questions and answer, or ask in the comments!