Through the study of mitochondrial disorders, scientists have suggested a link b

Question

Through the study of mitochondrial disorders, scientists have suggested a link between the decline of mitochondrial function and aging. What process appears to be involved in this suspected phenomenon? recombination among mtDNAs of different mitochondria accumulation of sporadic mutations in the nuclear genome accumulation of mutations in the mtDNA recombination of mtDNA and nuclear DNA decline of mutations in the nuclear genome In Drosophila subobscura, the presence of a recessive gene called grandchildless (gs) causes the offspring of homozygous females, but not those of homozygous males, to be sterile. Which statement best explains why females, and males, are affected by the mutant gene? The daughters are likely sterile because the gs^+ allele product has a maternal effect necessary for normal development/functioning of female gonads. Since the mother did not have this allele, all of her daughters do not have functioning gonads, regardless of their own genotype at this locus. The gs^+ allele is likely necessary for normal development/functioning of female gonads. Since the grandchildless gene is x-linked, females with two copies of the recessive allele are sterile. The daughters are likely sterile because the gs^+ allele product has a maternal effect necessary for normal development/functioning of female gonads. Since the mother's chloroplastic genome and did not have this allele, all of her daughters do not functioning gonads. The gs^+ are allele is likely necessary for normal development/functioning of male gonads. Since the grandchildless gene is Y-linked, females do not receive the gs^+ allele and are thus sterile.

Explanation / Answer

Ans 15 d recombination of mtDNA and nuclear genome

The processes of our body are governed by nuclear genome, so when aging and mitochondrial disfunction corelate, they indicate the chances of recombination between mitochondrial DNA and nuclear genome.

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