Question

what was one reason for the increased use of animal experimentation in the 19th century?
advances in genetic technology
growth of medical research institutions
legal restrictions on human testing
decline in animal populations
which of the following animals is considered a non - mammalian model organism?
mouse
monkey
pig
zebrafish

Explanation:

1. In the 19th - century, the growth of medical research institutions led to an increased need for experimental subjects, which contributed to the increased use of animal experimentation. Genetic technology advances came later. Legal restrictions on human testing became more prominent in later periods too. A decline in animal populations would not cause an increase in animal experimentation.
2. Mice, monkeys, and pigs are mammals. Zebrafish are fish and are non - mammalian.

Answer:

1. Growth of medical research institutions
2. Zebrafish