What are the steps (in the correct order) that link a change in the base sequence of a gene to a change in the phenotype of an organism like a mouse or a human?
A. RNA—>DNA—>Protein
B. DNA—>RNA—>Protein
C. DNA—>Protein—>RNA
D. Protein—>RNA—>DNA
Ans: B. DNA—>RNA—>Protein
You might also like to view...
The Law of Thermodynamics that states that increases in entropy are favored is:
A. The First Law of Thermodynamics B. The Second Law of Thermodynamics C. The Third Law of Thermodynamics D. The Fourth Law of Thermodynamics
Each DNA double helix has a backbone that consists of alternating ____
a. covalent and ionic bonds b. nitrogen-containing bases c. hydrogen bonds d. sugar and phosphate molecules e. covalent and hydrogen bonds
Given the following mRNA sequence, which of the following mRNAs would encode a protein with a different sequence of amino acids? 5? - AUG CAG UUA GCG UGC UAG - 3?
A) 5? - AUG CAA UUA GCG UGC UAG - 3? B) 5? - AUG CAG UUA GCA UGC UAG - 3? C) 5? - AUG CAG UUG GCG UGC UAG - 3? D) 5? - AUG CAA UUA GCG UGU UAG - 3? E) 5? - AUG CAC UUA GCA UGC UAG - 3?
In Drosophila, the hunchback gene encodes a protein (HB) that has a role in the development of the thorax. In the zygote and embryo, the expression of hunchback is stimulated by high concentrations of Bicoid protein. Which of the following is accurate about the expression of hunchback in the Drosophila embryo?
A. The HB protein is produced in the middle of the embryo; but is not produced in the anterior or posterior end. B. The HB protein is produced only in the anterior half of the embryo. C. The HB protein is produced throughout the embryo. D. The HB protein is produced only in the posterior half of the embryo. E. No HB protein is produced in the embryo.