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CBSE Class 10 Answered

Explain the mechanism of heridity changes.
Asked by Ampra1952 | 06 Jun, 2019, 03:18: PM
answered-by-expert Expert Answer
  • Heredity is the passing on of traits from parents to their offspring.
  • These changes are passed on because of DNA and crossing over of genes.
  • The traits that an organism possess are present because of their DNA. Their DNA has the information to express those traits/characterstics.
  • In human beings, there are 46 chromosomes or 23 pairs of chromosomes, one from each parent.
  • During gamete formation, the gamete takes one chromosome from each pair.
  • When two such gametes having a single set of genes combine together, they restore the normal diploid number of chromosomes in the progeny.
  • This is the mechanism of inheritance of traits. 
Answered by Sheetal Kolte | 07 Jun, 2019, 11:28: AM

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