Mutagen is an agent or a substance that causes permanent change in the genetic material of living organisms ( DNA, deoxyribonucleic acid). This process is called mutation.

A mutagen can be a chemical, physical or biological agent that causes mutation in the DNA.

Example- Physical agents such as -

Ionizing radiations like alpha particles, gamma rays, X-rays that brings break in the DNA and cause other damages.

Ultraviolet radiations that creates pyrimidine dimers ( T=T) and causes replication errors if damage is not repaired.

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In 1985, research by ______________ and his colleagues at leicester university, england led to the discovery that portions of th

Irina18 [472]

The answer is Dr Alec Jeffreys. The genetic fingerprint and DNA profile are used by forensic science to help the police in their research work. The same technique has proved very useful in resolving litigation about paternity, for the identification of human remains in armed conflicts and for the identification of the corpses of historical figures.

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Very large premolar and molar teeth, a sagittal crest, heavy mandibles, and wide zygomatic arches are found in modern gorillas,

Dovator [93]

Answer:

The correct answer will be option- Australopithecus.

Explanation:

Australopithecus is an extinct genus of a large group of animals called primates. This genus is closely related to humans which may or may not be ancestors of Homo sapiens.

Australopithecus exhibits traits of both ape and human-like which is distinguished by the small size of the brain, smaller canine teeth but large molar and premolar teeth, broad dish-shaped face, sagittal crest, large molar teeth, flared zygomatic arches and sloping forehead.

Thus, option- Australopithecus is the correct answer.

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