Question

1.How do reproductive cloning and therapeutic cloning differ?

	a.	The DNA in the nucleus of cells produced for therapeutic cloning is genetically identical to the donor genome, whereas in cells produced for reproductive cloning it is not.
	b.	Reproductive cloning requires a supply of fertilized donor egg cells, whereas therapeutic cloning requires unfertilized egg cells.
	c.	Therapeutic cloning requires nuclear transplantation, whereas reproductive cloning does not.
	d.	Embryos are placed into foster mothers during reproductive cloning but not during therapeutic cloning

2. Which of the following proteins are housekeeping proteins?

	a.	The structural proteins of chromosomes.
	b.	RNA polymerases.
	c.	DNA repair enzymes.
	d.	Ribosomal proteins.
	e.	All above

3. Which of the following proteins are housekeeping proteins?

	a.	The structural proteins of chromosomes.
	b.	RNA polymerases.
	c.	DNA repair enzymes.
	d.	Ribosomal proteins.
	e.	All above

Answer 1

1. The correct answer is d. Embryos are placed into the foster mother in the reproductive cloning but not during therapeutic cloning.

Reason: The embryos are grown in cultured dishes in therapeutic cloning, they are not placed into the foster mother. Whereas in the reproductive cloning involes the creating an organism which are genetically identical to the donor organism/animal through the nuclear transfer of the somatic cell where the embryo can be placed into the foster mother where it can easily develop and implant.

2. The correct option is e. All above.

Reason: The structural proteins of chromosome, RNA polymerase, DNA repair enzymes and ribosomal proteins all are considered as the housekeeping proteins/gene.

The housekeeping proteins are the genes that actively express, for maintaining cellular function or basic function in cell. All of the above mentioned protein and enzyme are essential for the functioning of cell. DNA repair enzyme for repairing the damaged cells, ribosomal protein for forming ribosome complex, RNA polymerase for the synthesis of RNA or in the process of transcription. The structural proteins performs numerous functions in the cell.