LIFESCI 7B Chapter Notes - Chapter 15.1, 16.1 : Hair Loss, Zygosity
7 Nov 2017
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Genotype is the genetic makeup of a cell or organism; phenotype is its observed characteristics. The genetic makeup of a cell or organism; the particular combination of alleles present in an individual. Polymorphism: any genetic difference among individuals sufficiently common that it is likely to be present in a group of 50 randomly chosen individuals. Phenotype: the expression of a physical behavioral, or biochemical trait; an individual"s observable phenotype include height, weight, eye color, and so forth. The effect of a genotype often depends on several factors. Alleles: the different forms of a gene, corresponding to different dna sequence in each different form. Homozygous: describes an individual who inherits an allele of the dame type from each parent, or a genotype in which both alleles for a given are of the same type. Heterozygous: describes an individual who inherits different types of alleles from the parents, or genotypes in which the two alleles for a given gene are different.
