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The first genetically modified animal, a mouse, was created in 1974 by Rudolf Jaenisch, and the first plant was produced in 1983. In 1994 the Flavr Savr tomato was released, the first commercialized genetically modified food.

Mice have many advantages over other model organisms: Their genome is similar to the human genome (99%), a good genetic/molecular toolbox is available and the animal's small size facilitates large scale/high throughput studies making it a cost-efficient model.

Approximately 80 genes have been identified that affect coat color in the laboratory mouse, and more than one-quarter of these have been molecularly characterized (11).

A mouse has been genetically engineered to have increased muscle growth and strength by overexpressing the -like growth factor I (IGF-I) in differentiated muscle fibers.

They concluded that the number of exons in both species is almost equal (245,200). They also postulated the existence of a very similar number of protein-coding genes ( 25,000 in the mouse and 24,200 in human).

When it comes to protein-encoding genes, mice are 85 per cent similar to humans. For non-coding genes, it is only about 50 per cent. The National Human Genome Research Institute attributes this similarity to a shared ancestor about 80 million years ago.

The mouse reference genome contains an approximately 24,500 protein-coding genes and was fully sequenced in 2002. Structurally, these are distributed across 19 pairs of autosomes, plus X and Y sex chromosomes. ... Variability between individuals within a species is due to variant gene forms called alleles.

Mice have 20 chromosomes in their haploid genome (thus 40 chromosomes in all). The haploid genome is about 3 picograms, similar to humans.

3.Do you think mouse offspring will always look like their parents? Yes. Explain: Because the genes from their parents pass on to the children, so the children will look like their parents.