Where does cytoplasmic inheritance occur?

Extranuclear inheritance or cytoplasmic inheritance is the transmission of genes that occur outside the nucleus. It is found in most eukaryotes and is commonly known to occur in cytoplasmic organelles such as mitochondria and chloroplasts or from cellular parasites like viruses or bacteria.

What is an example of cytoplasmic inheritance?

The inheritance of characters controlled by genes present in the cell cytoplasm rather than by genes on the chromosomes in the cell nucleus. An example of cytoplasmic inheritance is that controlled by mitochondrial genes (see mitochondrion).

Which has its own DNA for cytoplasmic inheritance?

Mitochondria
Mitochondria are the cytoplasmic organelles which contain its own DNA and various respiratory enzymes and are main source of energy for the cell.

Which organelle is responsible for maternal inheritance?

Maternal inheritance of mitochondria in humans Because mitochondria are inherited from a person’s mother, they provide a way to trace matrilineal ancestry (line of descent through an unbroken chain of female ancestors).

What is the role of cytoplasmic inheritance in genetics?

Cytoplasmic inheritance has been useful in explaining the role of various cytoplasmic organelles in the transmission of characters in different organisms.

Why is cytoplasmic inheritance called maternal inheritance?

Therefore, it has been clear that the Cytoplasmic inheritance is also called maternal inheritance because most of the cytoplasm of the zygote is provided by the ovum. Hence, option ‘C’ is the correct answer.

Who discovered cytoplasmic inheritance?

Correns
Evidence for cytoplasmic inheritance was first reported by Correns in Mirabilis jalapa and by Bar in Pelargonium zonule in 1908. Rhoades described cytoplasmic male sterility in maize in 1933. So the scientist who first discovered the cytoplasmic inheritance is Correns.

Which organelle is related to cytoplasmic inheritance in Mirabilis Jalapa?

plastid
Complete answer: The plant Mirabilis jalapa resembles a good example of plastid inheritance. Plastids are cytoplasmic organelles found in the cells of plants.

Which organelle is responsible for inheritance and why?

Mitochondrial DNA is only a small portion of the DNA in a eukaryotic cell. In humans, the 16,569 base pairs of mitochondrial DNA encode for only 37 genes. In most species, including humans, mtDNA is usually inherited solely from the mother. Therefore, mitochondria is responsible for maternal inheritance.

How does cytoplasmic inheritance differ from Mendelian inheritance?

Answer: Explanation: Mendelian inheritance is governed by nuclear genes whereas cytoplasmic inheritance is governed by plasma genes. The location of genes in mendelian inheritance is on the chromosomes and for cytoplasmic inheritance it is on the chloroplasts or mitochondria.

What is role of cytoplasmic inheritance in genetics?

Cytoplasmic inheritance is defined as the inheritance of organelle DNA from the parents. Cytoplasmic inheritance differs from “plain old” nuclear genetics because it does not follow the laws of gene inheritance which state that half of the genes will come from each parent.

What do you mean by cytoplasmic inheritance?

Inheritance due to genes located in cytoplasm is called cytoplasmic inheritance. Since genes governing traits showing cytoplasmic inheritance are located outside the nucleus and in the cytoplasm, they are referred to as plasmagenes.

What organelles are involved in the cytoplasmic genetic system?

In addition to the nuclear genetic system, the cytoplasmic genetic system is mainly transported by the DNA of extranuclear organelles, such as mitochondria and chloroplast. These organelles also contain genes which inherit uniparentally.

What is a cytoplasm and what is its function?

A cytoplasm comprises some autonomous organelles like mitochondria and plastids that possess their own genetic material. Mitochondria is present in both animal and plant cell, whereas plastids are only found in the plant cell. As we know, nucleic acids like DNA and RNA are responsible for the inheritance of the genes.

Do cytoplasmic inheritances show Mendelian inheritance?

Similarly, all the genes present in a mitochondrion are known as chondrioms. The genes present in plastid and in mitochondrion are located in their own DNAs and are known as cp DNA and mt DNA, respectively. These DNAs are collectively termed organelle DNA. Cytoplasmic inheritances do not show Mendelian inheritance.