biology question?

[vennesa]

Tay-Sachs disease is a genetic disease that occurs mainly in certain people of Eastern European descent. This gene was recently found in a population of people of Cajun descent in Louisiana. The most likely reason that the gene appeared in the Cajun population is that

1. a chromosomal mutation occurred in the Cajun population
2. polyploidy occurred in the Cajun population
3. a person of Cajun descent mated with a person of Eastern European descent
4. the environment of Louisiana has become more like that of Eastern Europe


which number is the correct answer?

[matefaterate]

these ideas about disease are al false and formed by human thought about a stubstance they found in a person who claimed to not feel goo ,. that also was a person they thought they could heal

[breeder_18]

the most probable would be 3 because the chances of the exact mutation occurring in two ethnicities is extremely low.

[cherrywings17]

3!!! cuz it does not say that people that live form there get it says decedents so like people who could have family from there.

[Julie P]

Its a recessive genetic disorder - a mutation on chromo 15

1 is correct

[PhanCsn]

1 is a possible answer but 3 is the most likely the answer. So its answer 3