In down's syndrome (Mongolism), each cell has how many chromosomes?

In Mongolism, each cell has how many chromosomes

In Mongolism, each cell has how many chromosomes

If an onion has 16 chromosomes in its leaf cell, how many chromosomes will be there in its root cell and pollen grains.

Down's syndrome is the result of trisomy of which chromosome ?

In Down's syndrome the chromosome number in each cell of body is

Down's syndrome is associated with trisomy of chromosome number:

In Down syndrome the chromosome number in each cell of body is

Down's syndrome is due to trisomy of 21st chromosome caused by

Down's syndrome is due to trisomy of 21st chromosome caused by