Animals that have had their $DNA$ manipulated to possess and express an extra gene are known as

Dolly the sheep was produced by:

Milk of transgenic cow '$Rosie$' was a nutritionally more balanced product for human babies than natural cow milk because it contained:

Read the following four statements $(A-D)$ and identify the mistakes in two of them.
$(A)$ The first transgenic cow,Rosie,produced milk which was human alpha-lactalbumin enriched.
$(B)$ Restriction enzymes are used in the isolation of $DNA$ from other macromolecules.
$(C)$ Downstream processing is one of the steps of $rDNA$ technology.
$(D)$ Disarmed pathogen vectors are also used in the transfer of $rDNA$ into the host.
Which of the two statements have mistakes?

What was the name given to the first transgenic cow?

Transgenic animals are animals in which a foreign gene is expressed. Such animals can be used to study fundamental biological processes and phenomena, as well as for producing products useful for mankind. Give one example for each type.