The first cloned animal was......

More than $95$ percent of all existing transgenic animals are $Y$.

Which of the following correctly defines a transgenic animal?

'Rosie',a transgenic cow,is known to produce a type of milk which has all the following characteristics,except:

What is genetic engineering useful for producing?

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?