How many pairs of chromosomes do human cells have?

Which element is found in both dna and proteins

3. in the fruit fly, recessive mutation brown, b, causes brown color of the eye and absence of red pigment. recessive mutation p of another independent gene causes purple color of the eye and absence of brown pigment. the cross of a brown-eyed female and purple-eyed male produced wild type eyes. what will be the colors and their ratio in f2?

Three applications for admission to a local university are checked, and it is determined whether each applicant is male or female. the number of sample points in this experiment is