BIO 105 Lecture Notes - Lecture 12: Brca2, Allosome, Karyotype
Document Summary
Homologous chromosomes are similar bu not identical. Different versions of the same gene (blood type a and blood type b) For n homologous pairs, there are 2^n possible combinations. 2 pairs, 4 combinations (kinds of gametes) 3 pairs, 8 combinations (kinds of gametes) 4 pairs, 16 cominations (kinds of gametes) 2^23 8 million different kids of gametes. 3 bolded words reasons proving that we are unique cells in a hypotonic solution water will enter the cell, causing the cell to swell. Sex chromosome: x and y or x and x. Down syndrome: deals with chromosome 21, there are 3 copies. Aligned in pairs, by size, shape, and bonding. Amount of energy needed to start a reaction. Enzymes put stress on the bonds so the bonds will break and lower or they will hold the bond closer together (?) Cells are not chromosoms don"t mix it up.
