Monohybrid cross. A monohybrid cross is a mating between two individuals with different alleles at one genetic locus of interest.[1][2] The character(s) being studied in a monohybrid cross are governed by two or multiple alleles for a single locus.
Robert Fulton (November 14, 1765 â February 24, 1815) was an American engineer and inventor who is widely credited with developing a commercially successful steamboat called Clermont. That steamboat went with passengers from New York City to Albany and back again, a round trip of 300 miles, in 62 hours in 1807.
In1866, Hiram Maxim, who designed the machine gun bearing his name, applied for and obtained the first of many patents at age 26 for a hair-curling iron. Four years later in 1890 two Frenchmen, Maurice Lentheric and Marcel Grateau, used hot-air drying and heated curling tongs to make deep, long-lasting Marcel waves.