BIOL 205 Lecture Notes - Intron, Wild Type, Allele
24 Sep 2014
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Eye colour development c-->g in promoter or making a stop codon in the rst 1/3. Most correct answer is c tgc-->tag in rst exon any one of these could be a null allele but the most likely is c. Wild-type: the normal or most common form reference strain. Genotype: genetic composition phenotype: a measurable character allele: one of the different forms of a gene that can exist at a single locus. Gene locus: the specific region on a chromosome where the gene is located diploid: having two chromosome sets. Homozygous: carrying a pair of identical alleles at one locus. Heterozygous: carrying a pair of different alleles at one locus eg. Dominant: an allele that expresses its phenotypic effect even when heterozygous with a recessive allele; thus, if a is dominant over a, then a/a and a/a have the same phenotype. (gives rise to a dominant phenotype) Recessive: an allele whose phenotypic effect is not expressed in a heterozygote.
