Question

The genes located in human mitochondria do NOT follow the inheritance pattern of

Extranuclear inheritance

Maternal effect

Cytomplasmic inheritance

Maternal inheritance

Answer 1

Ans: Maternal effect. Maternal effect comes when an organism's phenotype is determined by its mother's genotype. For example, if a mutation is recessive in the maternal effect, a female homozygous may appear phenotypically normal for the mutation, but her offspring may exhibit the mutant phenotype, even if they are heterozygous for the mutation.

Extranuclear inheritance - Uniparental inheritance occurs in extranuclear cells, when only one parent contributes to the offspring organellar Genome. Maternal descent of human mitochondria is a classic example of uniparental gene transfer. The mitochondria of the mother is transferred via the egg to the offspring after fertilization.

Maternal inheritance - The heritage mode of mitochondria is exclusively maternal, whereas both parents inherit the nuclear genomes equally. Mutations of the disease associated with mitochondria are thus also often maternally inherited.

Cytoplasmic inheritance - mitochondrial genome is the most obvious example of cytoplasmic inheritance in animal cells.... Simply by the dilution process, the animal that emerges from cloning procedures using cell fusion usually ends up with oocyte mitochondrial genes, not the donor nucleus.