Pathogenic mutation. p-a rare allele that exist at a frequency of less than .01 in the human population. v- a change in DNA sequence that may or may not be pathogenic. patho- change in DNA sequence that has an effect on the encoded protein of gene expression that results in disease.
In the fall of 1791, Washington learned of the newly patented automated milling system invented by Oliver Evans. Evans received U.S. Patent #3 for his groundbreaking system, which moved wheat and flour throughout the mill without the need of manual labor. Washington purchased a license for the patent and had the milling system installed in his gristmill. Today, this milling system is faithfully interpreted, fully-functioning, and open to guests on a seasonal basis.
An African American man named Garrett Morgan was one of the many people who experimented with chemical hair straighteners during the late 19th and early 20th centuries. Answer #3: No Madam C. J. Walker did not invent the perm or the straightening comb. This is a myth.<br /><br />Answer #1: yes Mrs. madam cj walker did invent the perm she invented lots more stuff to like the straiting comb and flat iron.<br /><br /> Answer #2: No Madam C. J. Walker did not invent the perm. Infact, she did not like the use of chemical hair straighteners.