Full Definition of LAWYER. : one whose profession is to conduct lawsuits for clients or to advise as to legal rights and obligations in other matters. â lawÂ·yerÂ·like \-ËlÄ«k\ adjective. â lawÂ·yerÂ·ly \-lÄ\ adjective. See lawyer defined for English-language learners.
In humans, red-green colorblindness is a recessive sex-linked trait. It is found on the X chromosome, not the Y. Because, males only have one X chromosome, they have a much greater chance of having red-green colorblindness. Females would have to be homozygous recessive in order to have red-green colorblindness.
Males are more aggressive and protective than females. Visual differentiating them is more difficult as male and female discus fish look very similar. As juveniles they are practically indistinguishable. Mature discus have a few physical differences and it is possible to visually differentiate them if you look closely.