It involves chromosomal abnormality; w<span>hen the condition is caused by trisomy 21, (down syndrome), the </span>chromosomal abnormality<span> occurs as a random event during the formation of reproductive cells in a parent. The </span>abnormality<span> usually occurs in egg cells, but it occasionally occurs in sperm cells.
I hope this answers your question. =)</span>
According to sources, the most probable answer to this query is that ethical issues such as animal use in laboratories and their cloning may pose a uninviting view towards the community
Thank you for your question. Please don't hesitate to ask in Brainly your queries.