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Inheritance

QuestionAnswer
What are genes? Unique segments of DNA that produce specific functions
What are traits? genetic traits you get from your parents
What is genetics? the study of how these genetic traiots are inherited
what is genetic variation? differences in traits among individuals
what is genetic variation coused by? different alleles
what are allels? alternate forms of a particualr gene can be same or different copies
what is a genotype? the genetic makeup of an organism
what is a phenotype? visible traits
what is mendels rule of Inheritance rule of segregation
what is the rule of segregation? each allele present in a parent will be segregated away from the other during gamate formation, allowing one or the other allele to be inhetrited in an offspring but not both
what can traits be? dominant or recessive
when do you use a test cross? use when the genotype of a parent is not known
what is a test cross? crossed with an organism that is homozygous recessive for the trait
what is rule of independent assortment? when the gene loci under study are not genetically linked to one another
what is the mono hybrid cross? are performed to examine the genotypes
what is the Dihybrid cross? two traits are studyed at the same time
what is incomplete dominance? 1 allele is completely dominant over the other then a phenotype that is intermediate between the two allelic traits can be observed
what is codominance? alternate form of intermediate triats
what are multiple alleles? more than two different alleles present in varying amounts in a given population
what is polygenic inheritance? where more than one gene locus has a similar and additive effect on the same triat
what are human pedigrees? phenotypic family tree
what is a phenotypic family tree? past realtives phenotypic trsits
what is a pedigree? helps in the study of gene expression and hereidity in humans
what5 are sex linked traits? factor often becomes apparant in human pedigrees
Created by: 179315
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