BIOL1003 Lecture 2: BIOL1003, Lecture 2
Document Summary
Nucleus breaks up to form easily stainable coloured bodies. Fundamental physical and functional unit of hereditary. Counted the bands on red eye fruit flies and linked this to inheritable genes. Revelation that you can touch and manipulate genes (led to m odern technologies) Chromosome: condensed form of proteins & nucleic acids carrying genetic information, visible visible only during cell division. When cell is dividing the chromosomes are relaxed & is spread out in the nucleus (called chromatin) Still more nucleic acids & proteins, but looks different. Listing of all the chromosomes in an organism: most multicellular organisms we know have an even number of chromosomes. Organisms that have one set of chromosomes (which all are unique) Two sets of chromosomes of similar shapes. The right no. of chromosomes for an organism. =euploidy (eu means right; ploidy amount of chromosomes) 3n t(cid:396)iploid (cid:894)usuall(cid:455) do(cid:374)(cid:859)t (cid:449)ofu (cid:449)ell (cid:449)/ (cid:373)eiosis(cid:895) Efficient cell division but only needs to divide once.
