gene function analysis Flashcards
who discovered gens and their ideas?
gregor mendal
who foussed on mechanism of species formation and tree bredding?
joseph kolneuter
what is medals first law?
principle of segregation
2 alleles of a gene segregate from each other during gamete formation
what is mendals second law?
principle of independant assortment
genes controlling different characters assort independently (randomly) into gametes
what is incomplete dominance?
heterozygous phenotype in intermediate between 2 homozygous phenotypes
what is codominance?
simultaneous expression of 2 phenotypes determined by alternate alleles of a single gene
what is forward genetics ?
approach use to find genes responsible for a particular phenotype
what is reverse genetics?
approach used to analyse phenotype caused by a gene when the gene has become disruped/mutated
what does a genetic complementation test do?
can be used to see if 2 independant isolated mutations with similar phenotypes are on same or different genes
how would you know if mutations lie on same of different genes?
non-complementary mutations - on same gene (mutant)
complementary mutations - on different genes (wold-type)
what is relationship between number of recombinantns and distances between genes?
number of recominants proportional to physical differences between linked genes