BIOL484 Study Guide - Final Guide: Flp-Frt Recombination, P Element, Site-Specific Recombination
19 Apr 2014
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Document Summary
Mendel"s 5 rules (two of which are referred to as laws ). 1st law: law of segregation: during sex repro in hybrids with opposing traits, half of the gametes receive one factor (a) and half receive the other (a) 2nd law: law of independent assortment: factors associated with different traits segregate independently. During asexual reproduction, factors do not segregate. Fertilization is random with respect to which factor is carried by a gamete. The most frequently encountered exception, violating the second law of independent assortment is linkage because linkage causes some factors to segregate more with each other than others. Trisomy and things violate the first law of segregation. Meiosis stages of first meiotic prophase / timing and primary function of meiotic recombination. Stages of first meiotic prophase: leptotene thin threads, zygotene homologue pairing first evident, pachytene meiotic recombination occurs & synaptonemal complex may be present, diplotene double thread chiasmata visible, diakinesis continued chromatin condensation.
