Answer:
DNA is arranged on chromosomes in segments called genes. One gene tells the cell how to make one protein. Different variations of a gene are called alleles. Each parent passes one allele to the child for each gene.
Explanation:
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Villi.
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<em>Urine</em> is a liquid water material formed by kidneys
Eye piece graticule
This is atransparent scale .usually have 100 divisions