In contrast to most eukaryotes, prokaryotes reproduce asexually. While sexual reproduction in eukaryotes results in offspring with genetic material which is a mixture of the parentsâ genome, a prokaryote will reproduce clones of itself. During reproduction, eukaryotes generate genetic variation by sexual recombination.
Symphony No. 101 (Haydn) The Symphony No. 101 in D major (Hoboken 1/101) is the ninth of the twelve London Symphonies written by Joseph Haydn. It is popularly known as The Clock because of the ticking rhythm throughout the second movement. 1 Composition, premiere, and reception.
But there are also  quite a few 'symphonies' without numbers, and at least one of the  numbered ones (no. 37) isn't by Mozart at all, but by Joseph  Haydn's younger brother Michael (Mozart only wrote a slow  introduction to it).