Question

1. Dolly the sheep was a sheep that was born to an unrelated mom. Her genome was inserted into an egg that had the DNA removed. This is an example of

a. RNA sequencing b. cloning c. Genetic engineering d. RNA interference 10 points

QUESTION 7 1. What is "gene expression"?

a. DNA that is known to contain genes that can be expressed b. the movement of genes from one cell to the other c. the production of mRNA and proteins that occurs when a gene is transcribed at certain times in the life of the cell d. the production of mRNA and proteins that occurs when a gene is transcribed at certain times in the life of the cell

Answer 1

Q.1. Dolly the sheep was an example of cloning. For producing a clone sheep. An egg cell was taken and its nucleus was removed and then a nucleus from somatic cell of a sheep was inserted into this anucleated egg cell. Then the hybrid cell was implanted into a surrogate mother. This technique is called ' nuclear transfer'. It is used for various cloning experiments.

So, correct answer is (b) cloning

Q.2. DNA sequences containing genes are transcribed to mRNA and mRNA are translated to proteins. Proteins are end product of genes. This is called gene expression but all the genes are not activated or express all the times, they are expressed only in the presence of various activators and inhibitors only.

So, both options (c) and (d) are correct as they are completely same 'the production of mRNA and proteins that occurs when a gene is transcribed at certain times in the life of cell'.

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