Mitochondrial DNA

What was the focus of the present study on the genetic variation of the family Osteoglossidae?

• Examination of nuclear genes in Osteoglossidae

• Analysis of morphological characters in Osteoglossidae

• Investigation of mitochondrial ND2 and ATPase6 genes in Osteoglossidae

• Exploration of the genetic variation in a different fish family

What did the phylogenetic analyses based on the combined sequences of ND2 and ATPase6 genes aim to achieve?

• Identification of species-specific nucleotide positions

• Comparison of genetic differences among different species

• Validation of existing taxonomy using morphological characters

• Reconstruction of the geographical distribution of Osteoglossidae species

Tags

NGSS.HS-LS4-1

Why in organisms only a few copies of mtDNA can be founded? (2 right answers)

• fragility of mtDNA due to the internal highly reactive mitchondrial evironment.

• haploidism

• few number of mitochondrion inside the cell

• uniparentally inhteritance

What is the main feature of mitochondrial DNA (mDNA) inheritance and how does affect its evolution?

• Clonal inheritance without recombination in mitochondrial DNA

• Evolutionary variability of mitochondrial DNA

• The accumulation of neutral mutations

• Lowconservation of mitochondrial DNA

Why is multiplex PCR considered more convenient than conventional PCR?

• Multiplex PCR allows the amplification of multiple target sequences in a single reaction.

• Conventional PCR requires specialized equipment that is not widely available.

• Multiplex PCR is more time-consuming than conventional PCR.

• Conventional PCR cannot amplify DNA from complex samples.