What is cytoplasmic determination?

1. What are cytoplasmic determinants?
2. What is cytoplasmic determinants example?
3. What is the role of cytoplasmic determinants in differential gene expression?
4. How do cytoplasmic determinants affect cell differentiation?
5. How do cytoplasmic determinants and induction work?
6. Can cytoplasmic determinants be RNA?
7. What is cytoplasmic localization?
8. How does distribution of cytoplasmic determinants occur?
9. Are cytoplasmic determinants transcription factors?
10. What are cytoplasmic determinants quizlet?
11. What is the purpose of cytoplasm for the developing embryo?
12. How cytoplasmic determinants determine the fate of blastomeres?
13. What is gastrulation biology?
14. What is genomic equivalence?
15. What causes cell determination?
16. Are blastomeres identical?

What are cytoplasmic determinants?

Definition. Cytoplasmic determinants are special molecules which play a very important role during oocyte maturation, in the female's ovary. During this period of time, some regions of the cytoplasm accumulate some of these cytoplasmic determinants, whose distribution is thus very heterogenic.

What is cytoplasmic determinants example?

The factors responsible for this early mapping out, within zygotes, of subsequent cell fate determination are termed cytoplasmic determinants. ... They consist, for example, of stored mRNAs as well as proteins and various regulatory factors that found within the cytoplasm of the egg cell.

What is the role of cytoplasmic determinants in differential gene expression?

The main role of cytoplasmic determinants is to regulate the gene expression. ... Therefore, the type of genes that are expressed in each type of daughter cells are different. The differential regulation of gene expression is achieved in both transcriptional and translational levels.

How do cytoplasmic determinants affect cell differentiation?

Cytoplasmic determinants affect cell differentiation by determining which regions of an embryo will form what structures.

How do cytoplasmic determinants and induction work?

Unlike the segregation of cytoplasmic determinants, induction is an extrinsic process that depends on the position of a cell in the embryo. ... Two identical cells can follow different fates if one is exposed to an external signal (often produced by a different cell) while the other is not.

Can cytoplasmic determinants be RNA?

These cytoplasmic determinants appear to be, in part, maternal messenger RNA molecules.

What is cytoplasmic localization?

The cytoplasmic transport and localization of mRNAs is a post-transcriptional mechanism that restricts the synthesis of proteins to specific sites within cells. For years, studies on mRNA localization were limited to a few localized transcripts in a small number of model systems.

How does distribution of cytoplasmic determinants occur?

During the segmentation, cytoplasmic determinants are distributed among the blastomeres, at different times depending on the species and on the type of determinant. Therefore, the daughter cells resulting from the first divisions are totipotent : they can, independently, lead to a complete individual.

Are cytoplasmic determinants transcription factors?

Cytoplasmic determinants

Indeed asymmetric distribution of cytoplasmic regulatory factors necessary for specification (e.g. mRNAs and proteins such as transcription factors) can influence the fate of the daughter cells.

What are cytoplasmic determinants quizlet?

Terms in this set (6) Cytoplasmic determinants. -maternal substances in the egg that influence course of early development. -after fertilization, early mitotic divisions spread zygote's cytoplasm into separate cells.

What is the purpose of cytoplasm for the developing embryo?

The cytoplasm in the egg cell provides those nutrients. Egg cells are much larger than sperm cells because they contain these nutrients and also hold the bulk of the machinery needed to allow a cell to survive.

How cytoplasmic determinants determine the fate of blastomeres?

Cytoplasmic de- terminants are differently segregated into each blastomere during cleavage, and fix the develop- mental fate assumed by the cells that inherit them. In this case, presence of cytoplasmic determinant in a cell is all that is needed to determine the fate of the cell.

What is gastrulation biology?

Gastrulation is defined as an early developmental process in which an embryo transforms from a one-dimensional layer of epithelial cells (blastula) and reorganizes into a multilayered and multidimensional structure called the gastrula.

What is genomic equivalence?

The presence of identical genes in cells that are radically different from each other is known as "genomic equivalence. ... If the genome is the same in all somatic cells within an organism (with the exception of lymphocytes; see Sidelights and Speculations), how do cells become different from one another?

What causes cell determination?

Cell determination usually takes place as a result of inductive signaling between nearby cells. ... Differential gene expression refers to the ability of a given unspecialized cell to express different genes and therefore produce different proteins and structures found within that final specialized cell.

Are blastomeres identical?

During the first few cleavage divisions, the blastomeres are spherical and totipotent (genetically identical), with the overall size of the developing embryo remaining the same. ... Further TE differentiation will result in the formation of the placenta, whereas the ICM will develop into the embryo proper.