What is cytoplasmic variation?
What is cytoplasmic variation?
Cytoplasmic genetic variation was a central hub in the epistatic network controlling the plant metabolome. This epistatic influence manifested such that the cytoplasmic background could alter or hide pairwise epistasis between nuclear loci.
What is the 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).
Why is the cytoplasmic inheritance important?
Cytoplasmic inheritance has been useful in explaining the role of various cytoplasmic organelles in the transmission of characters in different organisms.
What is meant by cytoplasmic inheritance?
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 cytoplasmic male sterility in plants?
Cytoplasmic male sterility (CMS), a condition under which a plant is unable to produce functional pollen, is widespread among higher plants. CMS systems represent a valuable tool in the production of hybrid seed in self-pollinating crop species, including maize, rice, cotton, and a number of vegetable crops.
What is cytoplasmic Class 12 inheritance?
Hint: Cytoplasmic inheritance is also called Extranuclear inheritance and it is defined as the transmission of genes that occur outside of the nucleus. It is found to occur in the cytoplasmic organelles example in organelles such as mitochondria and chloroplasts.
Which cytoplasm is responsible for cytoplasmic inheritance?
Complete answer: – Cytoplasmic inheritance is the extranuclear transmission of genes. It occurs in most eukaryotes, commonly occurring in cytoplasmic organelles such as chloroplast and mitochondria as well as cellular parasites such as bacteria and viruses.
How does cytoplasmic inheritance differ from nuclear inheritance?
The key difference between cytoplasmic inheritance and nuclear inheritance is that cytoplasmic inheritance takes place from genes present in cytoplasmic organelles while nuclear inheritance takes place from genes present on the chromosomes. The resultant zygote has the cytoplasm of the egg cell.
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.
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.
What are the functions of the cytoplasm in the cell?
The cytoplasm is also the site of protein synthesis and is important for cell division. Acting as a buffer that protects the genetic material and organelles of the cell from damage due to an external shock. Maintaining proper osmotic pressure of the cell, thus helping in maintaining a stable internal environment (homeostasis).
When does the cytoplasm divide into two daughter cells?
The physical process involving the division of cytoplasm of a parental cell into two daughter cells is called cytokinesis. Q3. When does the cytoplasm divide? Ans. Division of cytoplasm, also known as cytokinesis occurs in the late telophase stage of cell division.
What is the difference between protoplasm and cytoplasm?
Ans. Cytoplasm involves all the contents inside the cell membrane of a cell excluding the nucleus whereas protoplasm includes cytoplasm, along with the nucleus of the cell.
Is the cytoplasm able to regain its original shape?
The cytoplasm deforms slowly under external force being capable of regaining its original shape.
