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Why Mitochondrial Eve should have been expected, and why the discovery of a Y-chromosome Adam was...

Why Mitochondrial Eve should have been expected, and why the discovery of a Y-chromosome Adam was inevitable. What aspect of these particular loci ensures that a common ancestor could be inferred?

just answer the bold part

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Answer #1

Sol:

  • Mitochondria follows maternal inheritance.
  • All the loci in mitochondrial genome are inherited maternally that means from mother( female) to offspring.
  • During fertilization sperm contributes only nucleus ,all the cytoplasmic content is from ovum.
  • Y chromosome is present only in males and it follows paternal inheritance.
  • That means all the loci present in Y Chromosome are inherited only from father to son.
  • We all know that Female have XX sex chromosomes and males have XY sex chromosomes.
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