Explain nonnuclear inheritance. ~ ap biology

Non-nuclear inheritance

Beside the DNA present in the nucleus of cell, there is small portion of DNA that is present outside the nucleus within the cell, both plants and animal cells have this DNA in chloroplast and mitochondria respectively.

Mitochondria is the powerhouse of cell for its ability of energy production. It contains DNA that is called mitochondrial DNA (mtDNA), it is present in less amount as compared to the nuclear DNA. It is inherited maternally. mtDNA encodes genes for respiration, so in case of any disorder in mtDNA would result in disorder in mitochondrial function.

In plants, chloroplast is responsible for photosynthesis reaction. It also has its own DNA called chloroplast DNA (cpDNA). Its DNA encodes for certain pigments, so variation in cpDNA would result in alteration of pigments in the plants for example flower color or leaf color etc. Its inheritance is both paternally and maternally.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

biology is the study of life. it is the study of living organism.