Which of the following proteins are likely to act as gene activators?

(a) factors X and Y
(b) factors X and Z
(c) factors Y and Z
(d) factor X only


Ans: (a) factors X and Y

Biology & Microbiology

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A mutation of a segmentation gene can result in

A. duplication of body parts. B. missing body regions. C. replacement of one body part with another. D. altered expression of homeotic genes. E. A segmentation gene mutation can cause all of these changes.

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Evaporation is a cooling process and condensation is

What will be an ideal response?

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The correct sequence of the stages of viral replication is:

a. Attachment - Synthesis - Penetration - Assembly - Release b. Penetration - Attachment - Assembly - Synthesis - Release c. Penetration - Attachment - Synthesis - Release - Assembly d. Attachment - Penetration - Assembly - Synthesis - Release e. Attachment - Penetration - Synthesis - Assembly - Release

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What is a mutation?

A) a change in DNA that leads to death B) an inherited change in DNA sequences that is the source of all genetic variation C) an inherited change in a DNA sequence D) an inherited changed in DNA sequence that is always bad for an organism E) the source of all genetic variation

Biology & Microbiology