What does the macronucleus control?

A macronucleus (formerly also meganucleus) is the larger type of nucleus in ciliates. Macronuclei are polyploid and undergo direct division without mitosis. It controls the non-reproductive cell functions, such as metabolism.

What is the function of the ciliate macronucleus?

Ciliate nuclei The macronucleus contains DNA that controls non-reproductive cellular functions (such as cellular metabolism). The micronucleus stores a copy of the genome specifically for the purpose of reproduction. The DNA contained in the MIC genome is dormant except during sexual reproduction.

What are the characteristics of the macronucleus of a ciliate?

The ciliates are a group of protozoans that are known for their characteristic cilia, which are hair-like organelles as well as the presence of a macronucleus. A macronucleus is the larger nucleus in contrast to the smaller type of nucleus found in ciliates.

What is the function of macronucleus in Paramecium?

The macronucleus is the centre of all metabolic activities of the organism. The micronucleus is a storage site for the germline genetic material of the organism. It gives rise to the macronucleus and is responsible for the genetic reorganization that occurs during conjugation (cross-fertilization).

What do macronucleus and micronucleus do?

Ciliates contain two types of nuclei: a micronucleus and a macronucleus. The micronucleus serves as the germ line nucleus but does not express its genes. The macronucleus provides the nuclear RNA for vegetative growth.

What is the main difference between macronucleus and micronucleus?

A macronucleus is the larger nucleus whereas the micronucleus is the smaller nucleus. Apart from their relative sizes, the micronucleus and the macronucleus differ based on their genetic features. The micronucleus is a diploid nucleus whereas the macronucleus is a polypoloid nucleus.

What is the function of the ciliate macronucleus quizlet?

The macronucleus is the larger of the two types of nuclei in ciliate protozoans. It controls all cell functions except reproduction.

Where is the macronucleus?

macronucleus, relatively large nucleus believed to influence many cell activities. It occurs in suctorian and ciliate protozoans (e.g., Paramecium).

What is the role of the micronucleus quizlet?

The micronucleus is smaller and controls the reproductive functions.

What is the difference of micronucleus and macronucleus?

What is micronucleus and its function?

Micronucleus (MN) is the extranuclear bodies of the damaged part of chromosome usually used to assess toxic potential of genotoxic agents. The study of DNA damage at the chromosome level is an essential part of genotoxicity testing because chromosomal mutation is an important event in carcinogenesis.

In what organism would you find a macronucleus What is its function?