Name: ________________ Aim 33: Cloning Questions Date: _____________

1) The offspring contain half the original number of chromosomes in each method.2) The DNA in the offspring is genetically identical to that of the original organism in both methods.3) The offspring produced by method A contain twice the original number of genes, while those produced by method B

contain half the original number of genes.4) The number of DNA bases is less than that of the original organism in method A,but more than the original number in

method B.

1. Two methods of reproduction are represented in the diagram below.

How does the DNA in the offspring produced by these methods compare to the DNA in the original organism?

1) the same number of chromosomes and the same types ofgenes

2) the same number of chromosomes, but different types ofgenes

3) half the number of chromosomes and the same types ofgenes

4) half the number of chromosomes, but different types ofgenes

2. The diagram below represents the cloning of a carrot plant.

Compared to each cell of the original carrot plant, each cell of thenew plant will have

1) meiotic cell division 2) fusion of gametes3) mitotic cell division 4) formation of spores

3. The cloning of cells involves the process of

1) Humans have DNA that is structurally very different fromother mammals.

2) Cloning can only he performed on animals that normallyreproduce asexually.

3) Human genes are made of too many different types ofsimple sugars.

4) Some people consider human genetic experimentsunethical.

4. Scientists have successfully cloned animals, including largemammals such as sheep. Which statement provides the mostlikely reason that a human has not yet been cloned?

1) altering genetic information2) changes in the structure of genes3) producing new individuals by means of cloning4) changes in the structure of individual chromosomes

5. Which situation is least likely to result in new inheritedcharacteristics?

1) sheep A, only 2) sheep B, only3) both sheep A and B 4) both sheep A and C

6. Steps in a reproductive process used to produce a sheep withcertain traits are listed below.

Step 1 — The nucleus was removed from an unfertilized eggtaken from sheep A.Step 2 — The nucleus of a body cell taken from sheep B was theninserted into this unfertilized egg from sheep A.Step 3 — The resulting cell was then implanted into the uterus ofsheep C.Step 4 — Sheep C gave birth to sheep D.

Which sheep would be most genetically similar to sheep D?

1) they are genetically identical2) they are produced sexually3) they have the same DNA codes4) they have identical chromosomes

7. Which phrase does not describe cells cloned from a carrot?

1) are twins2) have the same parents3) are of two different sexes4) developed from more than one sperm cell

8. From a single monkey, an animal breeder claims that he hassuccessfully cloned two monkeys. He displays the two monkeys,a male and a female, to the public. The claim of the breedershould be rejected because the monkeys

1) stimulate differentiation in other mammoth cells2) provide fragments to replace certain human body chemicals3) act as a template for repeated replication4) trigger mitosis to obtain new base sequences

9. A small amount of DNA was taken from a fossil of a mammothfound frozen in glacial ice. Genetic technology can be used toproduce a large quantity of identical DNA from this mammoth'sDNA. In this technology, the original DNA sample is used to

1) The one leaf cell removed formed a zygote that developedinto a new plant by mitotic cell division.

2) This procedure is used to produce new tomato plantsthat are clones of the original tomato plant.

3) The cell taken from the leaf produced eight cells, eachhaving one-half of the genetic information of the originalleaf cell.

4) The new tomato plant will not be able to reproducesexually because it was produced by mitotic cell division.

10. A technique used to produce new plants is represented in thediagram below.

Which statement is best supported by the information in thediagram?

1) no longer able to reproduce2) genetically identical to her mother3) able to have a longer lifespan4) unable to mate

11. “Dolly” was a sheep developed from an egg cell of her motherthat had its nucleus replaced by a nucleus from a body cell ofher mother. As a result of this technique, Dolly was

Answer Keycloning notes

1. 2

2. 1

3. 3

4. 4

5. 3

6. 2

7. 2

8. 3

9. 3

10. 2

11. 2