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Questions and Answers
What is responsible for the genetically determined variability among humans?
What is responsible for the genetically determined variability among humans?
- Genetically determined phenotypic variability
- Sequence of nuclear DNA (correct)
- Chromosome number alterations
- Variation in mitochondrial DNA
Which type of DNA sequence differences have little or no effect on phenotype?
Which type of DNA sequence differences have little or no effect on phenotype?
- Variation in mitochondrial DNA
- Genetically determined phenotypic variability
- Chromosome number alterations
- Small fraction of different DNA sequences (correct)
What is responsible for causing disease in humans?
What is responsible for causing disease in humans?
- Changes in DNA sequence of individual genes (correct)
- Changes in mitochondrial genomes
- Chromosome number alterations
- Genetically determined phenotypic variability
What do gene mutations alter?
What do gene mutations alter?
What is nearly 99.9% identical between any two humans?
What is nearly 99.9% identical between any two humans?
Which type of mutation may lead to the formation of a variant protein with altered properties?
Which type of mutation may lead to the formation of a variant protein with altered properties?
What is the term for mutations occurring in cancer and cannot be transmitted?
What is the term for mutations occurring in cancer and cannot be transmitted?
What mechanism introduces errors during the normal process of DNA replication?
What mechanism introduces errors during the normal process of DNA replication?
Which type of DNA changes are usually corrected through proofreading mechanisms?
Which type of DNA changes are usually corrected through proofreading mechanisms?
What percentage of replication errors are corrected by a series of DNA repair enzymes?
What percentage of replication errors are corrected by a series of DNA repair enzymes?
What is responsible for the genetically determined variability among humans?
What is responsible for the genetically determined variability among humans?
Which type of DNA changes may have little or no effect on phenotype?
Which type of DNA changes may have little or no effect on phenotype?
What process alters chromosome number, structure, or individual genes?
What process alters chromosome number, structure, or individual genes?
Which type of DNA sequence differences are directly responsible for causing disease?
Which type of DNA sequence differences are directly responsible for causing disease?
Which type of mutation may lead to complete loss of expression of a gene or the formation of a variant protein with altered properties?
Which type of mutation may lead to complete loss of expression of a gene or the formation of a variant protein with altered properties?
What is the term for mutations that occur in cells that will populate the germline and are usually inherited?
What is the term for mutations that occur in cells that will populate the germline and are usually inherited?
What mechanism is responsible for correcting more than 99.9% of errors of DNA replication?
What mechanism is responsible for correcting more than 99.9% of errors of DNA replication?
What are the two basic mechanisms of gene mutations?
What are the two basic mechanisms of gene mutations?
Which type of DNA changes is usually corrected through proofreading mechanisms?
Which type of DNA changes is usually corrected through proofreading mechanisms?
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