X is the dominant allele / curly hair , females have two X chromosomes and males have an X and Y
The statement above is TRUE.
Critics' comments are usually acidic and negative in tone. One advantage of paraphrasing such comment is that one has the power to make appropriate word choice that will reduce the attack intensity of such comments.
It is always necessary to analyze research for bias
The atria of the heart merely need to allow blood to flow into the ventricle, and therefore aren't very muscular.
The ventricles of the heart need to actually pump blood to the rest of the body, whether to the lungs or the the rest of the body.
The largest natural population of organisms that can interbreed to produce fertile offspring are species.