Why is the controlled timing of gene expression crucial to an organism because it allows for which of the following?

The regulation of gene expression conserves energy and space. It would require a significant amount of energy for an organism to express every gene at all times, so it is more energy efficient to turn on the genes only when they are required.

Why is timing and location of gene expression during development important?

Scientists are beginning to appreciate that the timing of the events that happen during development plays a decisive role in defining an organism, which may help to explain how species evolve without the creation of new genes.

Why is it important for a cell to be able to turn a gene off?

Gene regulation is an important part of normal development. Genes are turned on and off in different patterns during development to make a brain cell look and act different from a liver cell or a muscle cell, for example. Gene regulation also allows cells to react quickly to changes in their environments.

Why is gene expression important?

Genes encode proteins and proteins dictate cell function. Therefore, the thousands of genes expressed in a particular cell determine what that cell can do. Thus, control of these processes plays a critical role in determining what proteins are present in a cell and in what amounts. …

What controls the timing of gene expression?

Transcription factors are proteins that control the activity of genes.

How is the timing of gene expression coordinated in embryonic development?

During development, cell specification and differentiation requires the spatial and temporal coordination of gene expression. This is facilitated through accurate interaction between intercellular signalling and gene regulatory networks. … This is speculated to balance the proportions of cells with specific fates.

Why is gene expression regulated?

Gene regulation ensures that the appropriate genes are expressed at the proper times. Gene regulation can also help an organism respond to its environment. Gene regulation is accomplished by a variety of mechanisms including chemically modifying genes and using regulatory proteins to turn genes on or off.

Why is it necessary for a multicellular organism to regulate its gene expression in a cell type dependent manner?

In multicellular organisms, gene regulation drives cellular differentiation and morphogenesis in the embryo, leading to the creation of different cell types that possess different gene expression profiles from the same genome sequence.

How does controlling gene expression alter the overall protein level in the cell?

Describe how controlling gene expression will alter the overall protein levels in the cell. … Eukaryotic cells change the accessibility (epigenetic), transcription, or translation of a gene. This will alter the amount of RNA and the lifespan of the RNA to alter the amount of protein that exists.

How does differential gene expression control organismal development?

How does differential gene expression control organismal development? 1. Epigenetic inheritance controls what genetic material ends up in each individual cell, determining its fate. 2. Development is controlled by genes regulated in different ways in different cells and at different times during development.

Why is cell differentiation important?

Differentiated cells are important in a multicellular organism because they are able to perform a specialised function in the body. However, specialisation comes at a cost. The cost is that the differentiated cells often lose the ability to make new copies of themselves.

How do proteins control gene expression?

Gene expression is primarily controlled at the level of transcription, largely as a result of binding of proteins to specific sites on DNA. … The regulator gene codes for synthesis of a repressor molecule that binds to the operator and blocks RNA polymerase from transcribing the structural genes.

How does the regulation of gene expression support continued evolution of more complex organisms?

How does the regulation of gene expression support continued evolution of more complex organisms? Cells can become specialized within a multicellular organism. Organisms can conserve energy and resources. Cells grow larger to accommodate protein production.

What does increased gene expression mean?

Gene expression is the process by which the instructions in our DNA are converted into a functional product, such as a protein. … It acts as both an on/off switch to control when proteins are made and also a volume control that increases or decreases the amount of proteins made.

In what way does controlling the proteins in an organism control the organism’s characteristics?

Controlling the proteins in an organism controls the organism’s characteristics because proteins are enzymes, and enzymes catalyze and regulate chemical reactions, and therefore can control certain traits such as color, shape, or even gender.

What genes control cell differentiation during development?

The genes that control cell differentiation during development are homeotic genes, which form all of the internal organs and helps regulate them, and Hox genes, clusters of homeoboxes that tell cells what to differentiate into and when to stop.

What is the difference between gene expression and gene regulation?

The main difference between gene expression and gene regulation is that the gene expression is the process which synthesizes a protein by using the information in a gene whereas gene regulation is the process of controlling the rate and the manner of gene expression.

What is wobble and what makes it necessary in protein synthesis?

Wobble base pairs are fundamental in RNA secondary structure and are critical for the proper translation of the genetic code. Wobbling allows faster dissociation of tRNA from mRNA and also protein synthesis.

What is meant by gene expression?

Listen to pronunciation. (jeen ek-SPREH-shun) The process by which a gene gets turned on in a cell to make RNA and proteins. Gene expression may be measured by looking at the RNA, or the protein made from the RNA, or what the protein does in a cell.

What is gene expression quizlet?

gene expression. the activation or “turning on” of a gene that results in transcription and the production of mRNA. genome. the complete genetic material contained in an individual. structural gene.