An allele is one of the alternative forms of a gene that governs a trait. if a fern plant is heterozygous for a particular trait, how can the alleles that control that trait be described?

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.