Lab 8 Pre Write Up

Lab 8 Pre Write Up - e Genotype – Genetic constitution of...

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Drew Rasmussen Penny Louka Biology 191 Lab 11 October 2010 Lab 8: Mendelian Genetics: Pre Write Up 1. Mendel’s first law of segregation states that when any individual produces gametes, the copies of the gene separate, so that each gamete receives only one copy. Mendel’s second law of Independent Assortment states that alleles of different genes assort independently of one another during gamete formation. From his studies Mendel concluded that different gene traits are inherited independently of one another. 2. Define the following: a. Gene – The fundamental unit of inherited information b. Allele – One of two forms of the DNA sequence of a particular gene. c. Dominant – The term dominant refers to alleles, and means the allele that exerts its genetics over the other d. Recessive – An allele that produces its characteristic phenotype only when its paired allele is identical
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Unformatted text preview: e. Genotype – Genetic constitution of a cell, an organism, or an individual f. Phenotype – An observable trait or characteristic of an organism caused by its genotype g. Homozygous – A cell containing two identical alleles of a gene h. Heterozygous – An organism is heterozygous at a gene locus when its cell contains two different alleles of a gene. i. Sex-linked – This term refers to characteristics that are determined by genes carried on the sex chromosomes (in particular, the X chromosome) j. Codominance – A condition in which both alleles of a gene pair are expressed with niehter one being recessive or dominant. k. Incomplete Dominance – A genetic factor that will be partially expressed due to the sharing of its controlling influence over the phenotypic trait with the other genetic factors that are present....
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Lab 8 Pre Write Up - e Genotype – Genetic constitution of...

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