chap 15 - 10. describe what gene linakge is. How can you...

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10. describe what gene linakge is. How can you recognize it, and how is it related to chromosomal mapping? Genes that are located on the same chromosome are called linked genes. Recombination of linked genes occurs due to crossing over. The sequence of genes on a chromosome can be determined by finding the recombination frequency between different pairs of genes. The frequency of crossing over varies along the length of a chromosome, and a linkage map provides the sequence but not the exact location of genes on chromosomes. 11. describe the processes that could lead to autosomal trisomy Nondisjunction occurs when homologous chromosomes do not move apart properly during meiosis I, or sister chromatids do not separate during meiosis II. In turn, one gamete receives two of the same kind of chromosome, while the other gamete does not receive any. If a chromosome is present in triplicate in the fertilized egg, the aneuploid cell with abnormal chromosomal number is trisomic for that particular
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chap 15 - 10. describe what gene linakge is. How can you...

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