Question

In: Biology

C. The circular chromosome-based genome of mitochondria in plant and animal cells, termed mitochondrial DNA or...

C. The circular chromosome-based genome of mitochondria in plant and animal cells, termed mitochondrial DNA or mtDNA, are quite distinct to one another in terms of their overall size, structure, sequence composition and genetic content. Detail these differences.

Solutions

Expert Solution

Parameter Nuclear DNA Mitochondrial DNA
1. Location It is present in the Nucleus It is present in the mitochondria
2. Histones Present Absent
3. Genes Nuclear DNA is made up of 20,000 of genes Mitochondrial DNA is made up of 37 genes
4. Inherited from Mother and Father Only mother
5. Function Genetic information, Transcription and Translation Respiration
6. Size It consists of 3.2 billion base pairs It consists of 16, 569 base pairs
7. Structure It is linear It is circular
8. Sequence composition and genetic content It has 23 pairs in each cell and are diploid in nature. It is monocistroninc It has no paired chromosomes with haploid. It is polycistronic
9. Introns It has introns It has no introns
10. Repari and Proof reading It has repair and proof reading mechanisms It has no repair or proof reading mechanisms
11. Recombination It is varied by recombination It has no recombination
12. Mutation rate It has low mutation rate It has high mutation rate

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