Answer:
Genes play an important role in determining physical traits — how we look —and lots of other stuff about us. They carry information that makes you who you are and what you look like: curly or straight hair, long or short legs, even how you might smile or laugh. Many of these things are passed from one generation to the next in a family by genes. Most cells have one nucleus. The nucleus is a small egg-shaped structure inside the cell which acts like the brain of the cell. It tells every part of the cell what to do. It contains our chromosomes and genes. Chromosomes come in matching sets of pairs and there are hundreds (sometimes thousands) of genes in just one chromosome. The chromosomes and genes are made of DNA.
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Explanation:
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I would say no.1 is he answer
Answer:
Biopsies are done to detect cancerous cells.
In biopsy, a piece of suspected tissue cut in thin sections is stained and examined under microscope.
Normal cells shows the property of contact inhibition
Whereas cancerous cells appears to have lost this property. And they multiply rapidly giving rise to masses of cells called tumour cells.
The two main functions of roots are to deliver water and nutrients to the plant or tree and provide an anchor that keeps the plant or tree in the soil. Roots are generally the first part of any plant that emerges during germination.
