Question

abormal development can occur in human body due to various reasons - what are the reasons​

Answer 1

Answer:

An unequal distribution of chromosomes during meiosis.

leading to abnormal assortments, occurs in somatic (non-sex) chromosomes (e.g., Down syndrome) and in sex chromosomes (e.g., Klinefelter syndrome). Environmental factors, both external and internal, are also important.

Some people inherit genetic disorders from the parents, while acquired changes or mutations in a preexisting gene or group of genes cause other genetic diseases. Genetic mutations can occur either randomly or due to some environmental exposure.

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