0
How is it possible that the cells within a single organism all have the same DNA genome but look different and have different functions?
Wiki User
∙ 9y ago
It is true that the cells of an organism (lets say Human) contain the same genome derived from it's parents. During the development of the embryos, the cells started forming a cluster of specialized tissue that end up in forming organs.
Now, all theses specialized cell types or tissues differ in respect of their GENE EXPRESSION PATTERN.
House keeping genes such as GAPDH, tubulin, actin and many more that have "basic" role in cell structure and function are constitutively expressed in different cell types.
But the cell or tissue type specific genes. As an example insulin is produced only in beta cells of the islets of Langerhans in pancreas. Antibodies are made in B cells (lymphocytes), and so hormones from its glands. These are only a few example, in fact there are 30,000 genes are coded to make proteins in the human genome, but not uniformly to express across different tissues.
One of the key factor regulates these specific expression (when it is required) is the transcription factors, external environment around the cells also influence the expression.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
What do you call the entire DNA of a organism?
genome
What are all DNA in one cell of an organism?
DNA is found (usually) in each cell of an organism in the nucleus or in an area called a nucleoid.
Is the genome of a living system equal to its genotype?
No; the genome is all of the possible genes and what they do/affect. The genotype is a simple description of which two alleles an organism has for a particular gene.
How is it possible that 2 people with the same genome could be different?
No two people have the same genome - everybody's DNA is slightly different.
What is Genetic Annealing?
the production of a new genome through the transfer of part of the genome of one organism to another organism.
Which term describes the entire DNA of an organism?
Genome is the term used to describe the entire DNA of a organism. For instance, if referring to the entire DNA in a human, you would call it: 'the human genome."
What is an organism's complete set of nuclear DNA?
An organisms complete set of nuclear DNA is a genome. Organism's inherit all of their mitochondrial DNA from the female parent.
What is the difference between the genome and the epigenome?
The genome is a complete set of genetic material of the organism, essentially its "blueprint".The epigenome is the way that genome is modified chemically and how it is packaged which defines how this "blueprint" is read and applied within the organism.Epigenetics is the study of the epigenome and its functional significance., i.e. the study of possible modifications that can occur to DNA and histone and its effect on the development of the organism.
Can the genome of an organism be taken as a template for PCR?
No about 16,000 bases is about the limit that you can do for PCR so perhaps you could use an entire viral genome (or a cDNA copy) as a PCR template but not an entire genome of cellular organism even if you ignore the fact that a eukaryotic organism has it's genome spread over separate chromosomes.
What is genomic analysis?
The analysis of an organism's genome. A genome is defined as a species' genetic make up.
What is the difference between genome and DNA?
Genomics is the study of the genomes of organisms, like the study of all the genes of and Proteomics is the large-scale study of proteins, particularly their structures and functions. Genomics has use in studying the human genome, bacteriophages, and cyanobacteria. Proteomics can create potential new drugs for the treatment of diseases, now understood by Genomics.
An organism's inherited alleles together form its?
Genome.
