Outline of Last LectureOutline of Current LectureCurrent LectureGeneAltered GenesKey TermsGenetics and FertilizationSex Linked GeneticsBIO SCI 150 1st Edition Lecture 10Outline of Last Lecture 1. DNAa. Historyb. Compositionc. Replicationi. Factorsii. In prokaryotesiii. In eukaryotesd. Rolling Circle ReplicationOutline of Current Lecture 1. Geneticsa. Definitionb. Altered Genesc. Key termsd. Genetics and Fertilizationi. Sex Linked GeneticsCurrent LectureGene Genetic traits are the characteristics of a living cell that are controlled by genes.- Most code for a protein- Proteins may be:o Structuralo Functionalo Enzymeso RegulatorsAltered GenesAn altered gene (mutant) codes for no protein or a nonworking protein or a protein that works in a different way.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Key TermsIncomplete dominance or blending inheritance – one normal gene is not enough to produce the normal trait and an intermediate trait is seenCo-dominate – both genes are expressedHomozygous – cells with 2 identical allelesHeterozygous – cell with different allelesGenotype – genes expressedPhenotype – expressed traitGenetics and FertilizationWhen a diploid undergoes meiosis and produces haploid gametes only one allele will be present in a gamete.The following mattings are possible:Sex Linked GeneticsEpistasis – if two (or more) genes act together to produce a sinlge trait - Different ratios are possible - Sex is determined by the presence of a Y chromosomeo Male – XYo Female – XXSex Linked – genes located on the X chromosomes- Like male pattern baldnesso Females can be carries and experience similar minute symptoms from
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