BIO 2133 Study Guide - Dont, Cri Du Chat, Karyotype
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What are the possible gametes produced by the f1 peas: yyrr, yyrr, yyrr, r, r, y, y, rr, yy, rr, rr, yy, yy, yr, yr, yr, yr. **d) is correct b/c if you look at the gametes: law of assortment and law of segregation. Law of assortment is especially important when you have more than 1 gene. Homologous chromosomes line up together at the equator. Are organized on either side and influences the assortment. New meiotic cells would have a homologous chromosome (one of the two) and reduce it to a haploid number. Chromosomal abnormalities: something went wrong with the meiosis: chromosome mutations occur, not base pair mutation! Something happened to the chromosome i. e. ) broke off, didn"t segregate/ assort properly, translocations. Defects in chromosome number: aneuploidy ( does not involve whole sets-nondisjunction) Defects in chromosome structure: chromosome rearrangement and deletions, in crossing over chromosome needs to exchange information, breaks to exchange info.
