Recombinant DNA Technology
Knockout mice are created by

creating a chimera by fusing cells from two different cell lines
mutagenizing a mouse and selecting for mutant offspring
transfecting embryonic stem cells with an altered gene sequence
infecting the mouse with a retrovirus

ANSWER DOWNLOAD EXAMIANS APP

Recombinant DNA Technology
An expression vector

always contains an origin of replication
usually contains a gene that confers antibiotic resistance to the bacterial host
always contains DNA segments for the regulation of mRNA production
All of these

ANSWER DOWNLOAD EXAMIANS APP