Read the following four statements (a-d) for certain mistakes in two of them.         
a. The first transgenic buffalo, Roise produced milk which wes human alpha-lactalbumin enriched.
b. Restriction enzymes are used in isolation of DNA from other macro molecules.
c. Downstream processing is one of the steps of recombinant DNA technology.
d. Disarmed pathogen vectors are also used in transfer of recombinant DNA into the host.

Which are the two statements having mistakes?

1. Statements (a) and (b)
2. Statements (b) and (c)
3. Statements (c) and (d)
4. Statements (a) and (c)

Genetic engineering has been successfully used for producing
1. Transgenic models for studying new treatments for certain cardiac diseases
2. Transgenic Cow-Rosie which produces high fat milk for making ghee
3. Animals like bulls for farm work as they have super power
4. Transgenic mice for testing safety of polio vaccine before use in humans

Maximum number of existing transgenic animals is of
1. Fish
2. Mice
3. Cow
4. Pig