"Certain lung cell activities bring oxygen to the blood."

"Students begin the school year anew in September"

"The man wore an artificial leg when he lost his leg in an accident."

"The average consumer spends a lot of money on food.

"The farmer used certain bulls for breeding stock because they were so healthy and strong."

"By looking at a cell's structure under the microscope, the students could identify what it was."

"A genome is made up of a complete set of paired chromosomes."

"Under the present circumstances the scientists decided to stop their research until they had more information."

" The clone of Dolly started with a single cell."

"Scientists tried cloning Dolly the sheep hundreds of times before they were successful."

"The boy was in a coma for days after he was hit by a car."

"The scientists cultivated the cells in a laboratory dish."

"The farmer tries to breed cows that have the desired features of giving a lot of milk and having back and white fur."

"Scientists studied the development of the cells in the petrie dish in the lab."

"Certain genes dictate whether we are tall or short."

"Through differentiation, skin cells become different from muscle cells."

The boy's mental disorder made him act very nervous."

"This homework is an exact duplicate of a homework I already received and completed."

"The chick within the egg is an embryo."

"The ethicists talked about the value of cloning humans."

"Many people disagree about the value of eugenics because they think it may be used in the wrong way."

"The scientists were able to fertilize the egg in the testube, outside the mother's body to create an embryo."

Since the cloning experiment had many flaws, the scientists could not make a cloned animal that lived."

"The public has the freedom of inquiry about how good or bad human cloning will be for everyone over time."

"The two cells were fused together and could not be separated afterwards."

"A clone of Junior would be a genetic duplicate of him."

"A clone of Dolly the sheep will be genetically identical to her."

The adopted child was not a genetically related baby to its adoptive parents."

"The brother and sister were genetically related offspring of their mother and father."

"Through the study of genetics we can better understand how to identify and cure diseases."

"The advisory board suggested that the President stop the research on cloning until more information is known."

"It is highly probable that Junior's clone will not be exactly like Junior in his personality."

"The infertile woman wanted to have a clone made of her husband since she could not have her own baby."

The parents were happy that their child did not inherit the disorder for diabetes from his mother."

"Mrs. Fister is considering cloning Junior".

"Mrs. Fister tries to decide if she wants to make a clone of Junior I."

"Junior II would never be exactly the same as Junior I."

"The scientist placed drops of the chemicals in the laboratory dish to create a new compound."

"Mrs. Fister knew that if Junior was taken off the life support machines, there was a good chance that he would die."

"In the Dolly experiment, researchers tried hundreds of times to clone a sheep from mature cells, but could only do it once."

"Genetic mutations are known to cause birth defects."

"The discovery of a cure for cancer is newsworthy because it is important information that will help the public."

"Without proper nourshment, the child would become weak and die."

"Scientists were able to use nuclear transfer to clone the rhesus monkey."

"Dolly the sheep was cloned using nuclear transfer technology."

Each cell contains one nucleus."

"The woman's left ovary produced too few eggs to enable her get pregnant."

"Girls often choose the preferred traits of being athletic and strong in the boys they date."

"Proteins are the most common organic compound in living cells., and found in all human beings."

"The wall of the cell is made out of proteins."

"Fortunately, the child did not inherit Cycle Cell Anemia or diabetes from her mother because they were recessive genes."

"Specific genetic instructions in operation on the cells were erased when the cells were in the resting state."

"Specialized cells can become hair or skin cells."

"Some cells specialize and become skin cells and some become bone cells."

"The cells specialized into hair cells."

"The scientists were able to splice the cells in the laboratory dish."

"Because the supply was less than the demand of the new Nike sneakers, the factories had to make a lot more sneakers."

substitute or standin for someone else

"The surrogate sheep gave birth to Dolly"

"The Pope lead services in the church"

"Scientists are trying to create a transgenic cow that will have better milk to help humans."

"Dolly the sheep is a transgenic animal."

"The lamb sucked on the mother sheep's udder to get its milk.

People noticed the girl for the uniqueness of her singing talent."