BIO 340 ASU General Genetics Exam Questions and Answers 100% Pass

BIO 340 ASU General Genetics Exam
Questions and Answers 100% Pass


Loss-of-function mutations -

CORRECT ANSWER: cause a gene to lose some or all of its normal

function.




QUESTION: Hypomorphic mutations -

CORRECT ANSWER: those that have lost only some of their

function.




QUESTION: Null mutations -

CORRECT ANSWER: have lost all of their function.




QUESTION: haploinsufficient -

,CORRECT ANSWER: a single copy is sufficient to produce the wild-

type phenotype in the heterozygous genotype




QUESTION: codominance -

CORRECT ANSWER: both alleles for the same characteristic are

simultaneously expressed in the heterozygote.




QUESTION: Incomplete Dominance -

CORRECT ANSWER: heterozygote phenotype appears to be

intermediate between the two parents




QUESTION: Multiple Alleles -

CORRECT ANSWER: An example of ____ ABO blood-type system

in humans. In this case, there are three alleles circulating in the

population.




QUESTION: allelic series -

, CORRECT ANSWER: dominance hierarchy of multiple alleles




QUESTION: Complementary Gene Interaction -

CORRECT ANSWER: 9:7 Ratio /indicates two genes interacting in the

same pathway. Mutations in either gene disrupt the pathway, causing the

mutant phenotype.




QUESTION: Duplicate Gene Interaction -

CORRECT ANSWER: 15:1 Ratio /genes in a redundant system; they

encode the same product, or they encode products that have the same

effect in a pathway or compensatory pathways.




QUESTION: Dominant Gene Interaction -

CORRECT ANSWER: 9:6:1 Ratio /two genes govern any character

separately but when both are present together, their phenotypic effect is

increased as if the effects of the two genes were additive or cumulative.