It is called the Rugae. 
Rugae is a term used in anatomy to refer to a series of ridges produced by folding of the wall of an organ. For example the gastric rugae which allows for expansion of the stomach after the consumption of foods and drinks. The rugae of the vagina are the transverse ridges on the mucous membrane lining the vagina. They allow the vagina to stretch during childbirth. 
        
                    
             
        
        
        
Cell Replication happens in S phase
        
                    
             
        
        
        
The answer is rr because if it were "Rr" it would be round. Dominant always exceeds the recessive. so if both traits were recessive, it would be recessive. so "rr" is your answer
        
                    
             
        
        
        
Answer:
B
Explanation:
Crossing over is the process involved during meiosis of two chromosomes sharing genetic information with each other from each parent. This happens so the two daughter cells or sister chromatids have a variety of genetic information and so they are not completely identical. This leads to genetic diversity or variation. 
 
        
             
        
        
        
The correct answer for this question would be the last option. The statement that best describes the reproductive life cycles of ferns and angiosperms is this: <span>The dominant sporophyte phase in the life cycles of both ferns and angiosperms includes the formation of leaves, roots, and stems. Hope this helps.</span>