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Mutation is the source of differences in the dna code.
What is Mutation?
- A mutation is a permanent change in the DNA sequence of an organism.Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations.
- Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.
- Damaged DNA can change by base pair replacement, deletion, or insertion. The majority of the time, mutations are benign, unless they result in tumor growth or cell death. Cells have developed systems for repairing damaged DNA due to the deadly potential of DNA mutations.
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Explanation:
We know that the larger the circle, the more large the diameter of the circle the more the quantity being studied.
We can clearly see that the South eastern coast of Australia has more number of people diagnosed with cancer.
The South western and the Northern part also records a sizable amount of skin cancer cases.
- In the middle part of the map where the circles are small, the number of people diagnosed with cancer is very low
- Other areas without the circle did not record any case of skin cancer.
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Scientist study index fossils so they will get an understanding of what life was like back then.
<span>Cattle and sheep are exposed to lead and zinc when these poisons are in the grass/soil.
Cattle and sheep graze on the grass, and thus they intake these minerals, such as lead and zinc when they come in contact with grass or earth they may eat along with grass. Thus they are exposed to them via eating.
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