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ANSWERS: 2
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Y-chromosome has no true homologue in he true genome, it is effectively hemizygous. That is, it does not have a similar partner chromosome, like the other 22 autosomal chromosomes. Although it pairs with X chromosome during cell division, little or no genetic recombination, it is inherited reasonably faithfully through the generations. This attribute makes it a useful marker for potential inheritance. Any changes that occur are due to mutation. Y-chromosomal markers compliment the maternally inherited mitochondrial DNA.
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each parent "With the exception of germ cells (sperm and egg cells), each nucleated cell of the body is diploid, meaning that it contains two copies of the entire human genome - one complete haploid copy inherited from each parent." Source and further information: "Rudolph's Pediatrics By Colin David ( Rudolph, Abraham M. ( Rudolph" http://books.google.com/books?id=OJ6G3E1YOEwC&pg=PA576&lpg=PA576&dq=nucleated+cells+are+inherited+from+who&source=web&ots=80s_WtzsrM&sig=WhIV3961ceaMAjl4aO7mB9vX2FA&hl=en&sa=X&oi=book_result&resnum=9&ct=result
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