11 resit

1ـ the process in which an unknown genetic model is mated to another is called....................

• Selective breeding

• hybridization

• in breeding

• Test cross

2 ـ the technique of controlling the DNA of an organism in order to add an exogenous nuclear acid

• Gel electrophorese

• recombined DNA

• Genetic engineering

• all previous

the process in which the cells are take up recombinant DNA is called

• linking

• suctioning

• transformation

• transport

the enzyme that binds the DNA parts together is

• Polymerase

• ligase

• Eco RI

• Helicase

DNA separation technique according to size of the parts called.......... The smaller pieces are closer

• Gel electrophoresis ـ positive

• recombinant DNA negative

• Gel electrophoresis ـ negative

• recombinant DNA ـ positive

In PCR the separation of DNA tapes requires the process ............ while the integration of primers requires

• cooling ، heating

• heating ، heating

• heating ، cooling

• Cooling ، Cooling

The nitrogenous G is always Incorporating with the nitrogen base ......................

• A

• C

• G

• T

Endings that do not contain a single strand of DNA are called ..............ـ

• Sticky ends

• Connected ends

• blunt end

• cut end

Genetic engineering has improved the nutritional value of rice in improving its level of...

• Carbohydrate

• iron and vitamins

• oils

• Na and Ca

Cloning is a process......................

• Increased DNA copies in the nucleus

• introduce new genes

• Remove unwanted genes

• from multiple identical cells