Consider a diploid organism that has 3 pairs of chromosomes. Assuming no crossing-over occurs, what proportion of gametes would be expected to contain chromosomes of maternal origin only?

Which of the following is an example of a tissue on the digestive system a.the stomach b.smooth muscle that lines the stomach c.nerve cells in the stomach d. enzyme molecules in the stomach

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

Which part of the spine is likely to cause a nerve signal to travel faster? a. backbones b. white matter c. nuclei d. gray matter