Read the following four statements (A-D):
A) In transcription, adenosine pairs with uracil.
B) Regulation of lac operon by repressor is referred to as positive regulation.
C) The human genome has approximately 50,000 genes.
D) Haemophilia is a sex-linked recessive disease.
How many of the

Question

Read the following four statements (A-D):
A) In transcription, adenosine pairs with uracil.
B) Regulation of lac operon by repressor is referred to as positive regulation.
C) The human genome has approximately 50,000 genes.
D) Haemophilia is a sex-linked recessive disease.
How many of the above statements are correct?

Accepted Answer

Two. A is correct because RNA uses uracil, so adenine pairs with uracil during transcription. D is correct because haemophilia is an X-linked recessive disorder; B is false because lac operon repression is negative regulation, and C is false because the human genome has far fewer than 50,000 genes.

Solution

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