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Mendelian Genetics

WVSOM Class of 2012 Mendelian Genetics

QuestionAnswer
what term means analysis of inheritance patterns to identify and characterize genes? genetics
what term means biological factors that induce particular traits? genes
what term means alternate forms of a given gene, inherited from different parents? alleles
what term means an allele which always determines the phenotype? dominant
what term means an allele which only determines phenotype in the absence of a dominant allele? recessive
what term means an entity that carries a mutation? It can be an allele, or an individual. mutant
what term means the combination of alleles in an individual? genotype
what term means observable characteristics, i.e. the physical manifestation of the genotype? phenotype
what term means to carry both copies of the same allele, i.e. both dominant or recessive? homozygous
what term means to have different alleles, i.e. one dominant and one recessive? heterozygous
what term means a homozygous individual? homozygote
what term means a heterozygous individual? heterozygote
what term means a cross where one gene locus is tracked, e.g. Aa x Aa? monohybrid cross
what term means a cross where two loci are tracked, e.g. AaBb x AaBb? dibybrid cross
what term means a cross where three loci are tracked, e.g. AaBbCc x AaBbCc? tribybrid cross
what term means the first generation produced in a series of crosses? filial one (F1)
what term means the second generation produced in a series of crosses? filial two (F2)
what term means inheritance of alleles at one locus does not influence inheritance at other loci? independent assortment
what term means sex determining chromosome, X or Y? sex chromosomes
what term means any chromosome except X or Y? autosome
what term means a gene located on the X chromosome? x-linked (sex linked)
what term means any gene not located on X, or characteristic not associated with X? autosomal
in which gene abbreviation scheme is the recessive shown as a lower case letter, the dominant upper case? scheme 1
in which gene abbreviation scheme is the recessive shown as a lower case, italicized abbreviation (usually three letters), and the dominant with the same letters but with a + superscript? scheme 2
in which gene abbreviation scheme is the recessive shown in lower case italics, the dominant or wild type as a +? scheme 3
in a monohybrid cross, what is the ratio for the F2 genotype? 1:2:1
in a monohybrid cross, what is the ratio for the F2 phenotype? 3:1
in a dihybrid cross, what is the ratio for the F2 genotype? 1:2:1:2:4:2:1:2:1
in a dihybrid cross, what is the ratio for the F2 phenotype? 9:3:3:1
nheritance at one locus is dependent of another. is this true or false? false
why is there an equal number of F1 gametes in a dihybrid cross? independent assortment
in a dihybrid cross, how many possible combinations occur in the F2 progeny? 16
what do the numbers 9:3:3:1 represent in the dihybrid F2 phenotype? 9 are dominant for trait 1 and trait 2; 3 are dominant for trait 1 and recessive for trait 2; 3 are recessive for trait 1 and dominant for trait 2; 1 is recessive for traits 1 and 2
what purpose does a test cross serve? it reveals recessive alleles by guaranteeing that they pair with other recessive alleles
what is the ratio when crossing a homozygous recessive with a heterozygote? 1:1
what is the genotype ratio in a test cross? 1:1
what is the phenotype ratio in a test cross? 1:1
what question does complementation answer? if two mutants with the same phenotype are produced by mutations of the same gene, or by mutations of separate genes
why are mutations in different genes complementary? because the F1 are wild type heterozygotes
why are mutations in the same genes non-complimentary? because the F1 are homozygous mutant
Created by: mhassan
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