structural chromosomal alterations

Chromosomes within a cell are arranged in sets. Each cell contains 46 chromosomes or 23 sets.
Such sets of chromosomes are classified according to an international nomenclature: from the largest to the smallest, followed by sex-chromosomes.

As you can see, we have:
two number 1 chromosomes,
two number 2 chromosomes,
two number 3 chromosomes,
and so on for all sets.


In structural chromosomal alteracions the chromosomal distribution is correct but a chromosome could be defective because many things can happen to him.

All the things that can happen have different names. If it is missing a tiny part (this alteration is known as "deletion");............................ If it is..........

For further information go to.......www.geneticsmadeeasy.com ............and clik on the following buttons of the index web:

Introduction - The origin of life - Cell specialization - Chromosomes - How do we acquire our inheritance?........- Questions (number 28)

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