Beacuse they died long time ago
Answer:
B. Premature stop codon mutation
Explanation:
B. Plasmid hope this helps.
Answer:
Natural selection and selective breeding can both cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. For this reason selective breeding is sometimes called artificial selection.
Explanation:
Permian-Triassic extinction
