A species that is not native to an ecosystem but is introduced artificially. Usually cause harm to the native species in the area.
Answer:
Genetics take a long time to mutate.
Explanation:
Trisomy 21, as illustrated by the karyotype, is caused by nondisjunction. This occurs when chromosomes do not separate properly during meiosis.
Answer is D) nondisjunction
Answer:
I would recommend reading the descriptions and then reading the passage/story if you have not done that yet.
