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3 Topic Pages Found in Biology and starting with the letter X
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Open X chromosome
X chromosome

Larger of the two sex chromosomes in humans and other placental mammals, the smaller being the Y chromosome . In females both the sex chromosomes are


Introduction Xenotransplantation is the use of live animal organs, tissues, or cells in human transplant operations. It has been hailed as a great


Transport tissue found in vascular plants , whose main function is to conduct water and dissolved mineral nutrients from the roots to other parts of