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Females have two copies of the X chromosome, while males have one X and one Y chromosome. The 22 autosomes are numbered by size. The other two chromosomes, X and Y, are the sex chromosomes. This picture of the human chromosomes lined up in pairs is called a karyotype.
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Since it will help the individual live longer, there is a greater chance that it will reproduce than those with lesser favorable traits. Thus the next generation will resemble the parents with the favorable triat more.
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There is so much you can do to develop your sperm, intake of vitamins, nuts and the right food will definitely help.
Answer:
hardness and luster
Minerals are classified by many different things - but the two speical and primary propertied that identify them are hardness and luster.
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