Sickle cell anemia is the result of a point mutation, a change in just one nucleotide in the gene for hemoglobin. This mutation causes the hemoglobin in red blood cells to distort to a sickle shape when deoxygenated. The sickle-shaped blood cells clog in the capillaries, cutting off circulation.
Saving an attachment. Saving attachments from Mail is just as easy. Next time you receive a message to which somebody has attached a file, just tap and hold on that attachment until a Share sheet pops up. In the bottom row of icons, choose Save Attachment.aving an attachment. Saving attachments from Mail is just as easy. Next time you receive a message to which somebody has attached a file, just tap and hold on that attachment until a Share sheet pops up. In the bottom row of icons, choose Save Attachment.
Undelete Mail in Yahoo! To undelete a message in Yahoo! Mail: 1  Go to the Trash folder. 2  Open the desired message. 3  Click Move in the Yahoo! 4  Mail toolbar. 5  Select Inbox or any other folder to recover the message. 6  In Yahoo! 7  Mail, you can also drag and drop the email to any folder, of course.ail: 1  Go to the Trash folder. 2  Open the desired message. 3  Click Move in the Yahoo! 4  Select Inbox or any other folder to recover the message. 5  In Yahoo!