Practice & Test Molecular Basis of Inheritance

Consider the following statements about the Human Genome Project (HGP): Statement I: The HGP aimed to sequence all 3.3 billion base pairs in the human genome, utilizing both expressed sequence tags (ESTs) and sequence annotation approaches. Statement II: One of the major challenges of the HGP was storing and analyzing the vast amount of data generated, leading to the development of bioinformatics. Choose the correct option:

Refer to the diagram depicting the components of a transcription unit. The diagram shows a DNA segment with three distinct regions: P, Q, and R. Region P is upstream and contains sequences recognized by RNA polymerase. Region Q is where the RNA is transcribed from. Region R is downstream and signals termination. Identify region Q and its role. [Imagine a linear DNA diagram with an arrow indicating transcription, and three labeled regions: P (to the left/upstream), Q (in the middle, the transcribed region), and R (to the right/downstream)].

With reference to the lac operon of E. coli, consider the following statements: I. The i gene codes for the repressor protein. II. The z gene codes for beta-galactosidase. III. The y gene codes for transacetylase. IV. Lactose acts as the inducer that inactivates the repressor. Which of the above statements are correct?