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BIOL 205 (111)

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BIOL 205
Ian D Chin- Sang

eye colour developmentcG in promoter or making a stop codon in the rst 13 Most correct answer is C TGCTAG in rst exonany one of these could be a null allele but the most likely is cTAKE HOME NOTE not all mutations are equalif you wanted a tumour suppressing been you would want A because it is splicing the intron and shouldnt aect the overallsites at 5 and 3 machine must recognize splice site sequencesif you dont cut out the intron it messes up the rest of the gene causing a non functional proteincould you get a null allele in a promoter mutation yesGenetic Terms You Must KnowWildtype The normal or most common form reference strainMutants variants of the wildtype formGenotype Genetic composition Phenotype A measurable character Allele One of the different forms of a gene that can exist at a single locusGene locus The specific region on a chromosome where the gene is located Diploid having two chromosome setsHaploid having one chromosome setHomozygous carrying a pair of identical alleles at one locusEgor mm or AA or aaHeterozygous carrying a pair of different alleles at one locus Eg m or AaDominant An allele that expresses its phenotypic effect even when heterozygous with a recessive allele thus if A is dominant over a then AA and Aa have the same phenotypegives rise to a dominant phenotypeRecessive An allele whose phenot
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