a Jessica McMaster 6 éve
350
Genotype and Phenotype
Genotype and Phenotype
Important Definitions
Recessive: A segment of DNA information that is used to make chromosomes gene that can be masked by a dominant gene
Dominant: A segment of DNA information that is used to make chromosomes that is expressed in the phenotype over a recessive allele
Gene: A unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring
Allele: One of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome
Main topic
Identifying the Phenotype of an Individual Given the Genotype
Carriers have the dominant/recessive genotype for a given gene, so they only show the phenotype caused by the dominant version of that gene
Differences between Genotype and Phenotype
The phenotype is influenced by the genotype
Phenotype determined by both genetic make-up and environmental influences
The phenotype of an organism is the observable physical or biochemical characteristics of an organism
Phenotype is the physical expression, or characteristics, of that trait
Genotype is the set of genes that it carries
The genotype is the set of genes in our DNA which is responsible for a particular trait