How can the sex of the rat be determined? A. by opening it up and seeing if it is pregnant

B. by looking for external testes, found on males and the presence (or absence) of teats, which are only found on female rats

C. by looking for internal ovaries and testes

D. by looking for external testes and a penis, there is no way to tell if it is a female​

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?

The relationship between intron and exon