What is the difference between polygenic inheritance and pleiotropy?
What will be an ideal response?
ANSWER: In polygenic inheritance, a single character is controlled by multiple genes. In pleiotropy, a
single gene affects two or more characters.
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What is the start codon for translation?
a. CUG b. TAG c. UAA d. ATG e. AUG
Which type of plant hormone was first discovered in experiments to define the nutrient media required
for plant tissue culture?
a. gibberellins b. cytokinins c. salicylic acid d. auxins e. brassinosteroids
_____, which occurs when two related viruses infect the same host at the same time, can lead to the emergence of new
viral strains. Genetic isolation
a. DNA mutation b. Cell lysis c. Viral reassortment d. Genetic isolation e. Reverse transcription
(a) What is a tumor-suppressor gene?
(b) What are oncogenes? (c) What is the normal (nonmutant) cellular version of an oncogene called? What will be an ideal response?