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Each cells in our body expresses. That means turning ON only the part of its genes. The rest of the part are usually repressed (i.e turned off). The process of gene turning ON and OFF is called as gene regulation. And it is one of the important part of each cell development and activities. Because this is the stage where each cell in our body is differentiated from others. For example the cardiac cell is different from nephrotic cells, neurons, muscle cells etc. There are various cell factors and environmental factors that affect the gene regulation. The signals from adjacent or other cells activates gene regulation. Gene regulation can happen at any moment during gene expression but usually occurs at the transcription phase (i.e Transforming the DNA into mRNA [Messenger RNA]).
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What controls the way in which a zygote differentiates?
Selective genes are turned on and off, depending on the fate of the cell.
What happens to Genes located in different regions of the body during embryonic development may?
the options are a. turned on and off b. never turned on c. turned on and left on d. activated for only a short time in one cell and a long time in another cell e. all of these
What are genes that are turned off called?
The genes are controlled by the control elements in their upstream sequence. It can also regulated at RNA level by si, sh RNAs. The regulation is basically influenced by the surrounding environments. Proteins mediated the regulation of gene expression.
What are three categories of genes that when mutated can lead to tumor formation?
· 1) Genes involved in cell division · 2) Oncogenes o Dominant-acting stimulatory genes o Normally low levels or expression is turned off o Mutation causes increased/hyper expression · 3) Tumour suppressor genes o Recessive-acting genes o Normally expressed to inhibit cell division o Mutation causes defects in product or no expression
What are the factors that control a trait called?
what do we call factors that control traits
What is the control center of a unicellular organsism?
A unicellular organism is an animal with just one cell, inside the nucleus, there are chromosomes which contain genes, at first all of the genes are turned on (Have a positive charge) ... Depending on which genes are turned off (Had an electron added to them) after the cell was created, this determines the actions of the cell throughout its life... When the genes have been switched off it is then the nucleus which drives the cell to act correctly according to the genetic instructions given by the genes.
What controls the way in which a zygote differentiates?
Selective genes are turned on and off, depending on the fate of the cell.
Why does it take only a few homeotic genes to control the development of a eukaryote?
Different genes are turned on or off in the different cell types as a result of specialization
Are all of organism's genes turned on at the same time?
No. Only certain genes are active at the same time. When they are not active, they are turned off.
What happens to Genes located in different regions of the body during embryonic development may?
the options are a. turned on and off b. never turned on c. turned on and left on d. activated for only a short time in one cell and a long time in another cell e. all of these
What is the role of genes in development?
Genes are composed of DNA. DNA bear the the information to guide he gene. Gene codes for proteins and maintain whole body. From the embryo the cell division depends on the enzyme that is encoded by the genes. Of the genes half is from father and half is from mother.
Why do organisms turn on and off genes?
Each cell in out body contains all the genetic information of that organism. However, not all the information is needed. For example, a muscle cell only needs information about being a muscle cell so it would turn off information/ genes that it does not need. Also, some genes can be turned on and off when needed. For example, some bacteria can use lactose but lactose is not always present in the environment. Instead of wasting time making lactose enzymes, the bacteria would keep the gene turned off until it was needed.
What does recessive albinism mean?
An Autosomal recessive pattern is one in which certain genes of the X sex chromosome are turned off, autosomal is in reference to the X chromosome and the fact that the genes are turned off is indicated by the recessive. So in the case of Albinism the pigmentation genes in the X chromosome are turned off causing the various side effects.
What are genes that are turned off called?
The genes are controlled by the control elements in their upstream sequence. It can also regulated at RNA level by si, sh RNAs. The regulation is basically influenced by the surrounding environments. Proteins mediated the regulation of gene expression.
When a gene or genes which code for units which make up a protein are turned on by the Cell they are said to be?
Activated.
When a gene or genes which code for units which make up a protein are turned on by the Cell they are said to be what?
Activated.
Do all cells within an individual carry the same assortment of DNA?
Every cell within an organism contains the same DNA. In higher organism, this DNA is selectively expressed. Genes are turned on and off depending on the cell.
