Mend.+Gen.+Answers

Mend.+Gen.+Answers - Answers to Study Questions 1. Mendel's...

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Answers to Study Questions 1. Mendel's first law, the law of segregation: at any given genetic locus, each gamete randomly receives one of the two alleles carried by the parent. That is, the two alleles at a genetic locus within an individual segregate (separate) from one another during the process of gamete formation. Mendel figured this out when he noticed that phenotypic traits often disappeared during the F1 generation, only to reappear at predictable frequencies in the F2 generation. We now know that segregation occurs as a result of the separation of homologous chromosomes during Meiosis I. Mendel's second law, the law of independent assortment: each pair of alleles segregates independently of the alleles at other genetic loci. This is most likely to be true when genetic loci occur on different chromosomes, because chromosomes segregate independently of one another in Metaphase I of Meiosis I. Independent assortment is less likely to occur if two genetic loci are located close to one another on the same chromosome. Mendel came up with this rule because he fortuitously chose phenotypic traits that were governed by genes located on different chromosomes. 2.
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Mend.+Gen.+Answers - Answers to Study Questions 1. Mendel's...

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