10 Questions
Which organelle is the only location of extra-chromosomal DNA within the cell?
Mitochondria
What is the size of the human mitochondrial DNA (mtDNA) in base pairs?
16,569 bp
How many mtDNA molecules are present in each human cell?
Hundreds
What is the role of human mtDNA in protein synthesis?
Encodes 13 of the 89 subunits of the mitochondrial respiratory chain
How is mitochondrial genetics different from Mendelian genetics?
Uniparental inheritance of disease mutations
How many copies of mtDNA are present in each mitochondrion?
Two to 10
How is mtDNA inherited?
Maternally
What is heteroplasmy?
A mixture of mutant and normal mtDNAs
Do mtDNA recombine?
No
What is replicative segregation in relation to mtDNA?
The process of giving pure genotypes of mtDNA during division
Test your knowledge of the genetics of mitochondrial disorders with this quiz. Learn about the unique characteristics of mitochondrial DNA and its dual genetic control. Explore the role of mitochondria in human cells and understand the implications of mitochondrial disorders.
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