Muscle cells contract because of contractile proteins.
When stating a routine request up front, what you should do
is as you have your request told, you should assume that the audience present
in the situation will be able to comply with the routine request that you have
asked or suggested.
Leaves are the food factories for plants they grow quickly, there are so many of them, and are they easily replaced.
The importance of mitosis to living organisms living organisms is that it allows organisms to grow in size and repair themselves.<span> When an organism grows, its cells do not grow larger; they divide to make more of themselves through the process of mitosis, or cell division.
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Answer:
Alec Jeffreys and the Pitchfork murder case: the origins of DNA profiling
British geneticist Alec Jeffreys began working in 1977 on a technique that could identify individuals through samples of their DNA. In 1984, he and colleagues devised a way to use a newly discovered property of DNA, isolated areas of great variability between individuals called restriction fragment length polymorphisms (RFLP), for forensic identification—the original DNA fingerprint.
In 1986, police asked Jeffreys for help in finding a man who had raped and killed two girls. DNA tests exonerated the primary suspect. Through a genetic dragnet, police found the perpetrator, Colin Pitchfork, who gave himself away when he asked a friend for a substitute blood sample.
Within a year, genetic fingerprinting was making the unique molecular structures of victims and suspects visible in criminal investigations around the world. Today, RFLP-based DNA analysis is being supplanted by newer techniques of genetic identification.
Explanation: .