Mutations vary in how much they affect the phenotype of an organism. Frameshift mutations typically cause more of an impact on phenotype than other mutations. Which describes a situation in which a deletion mutation would NOT result in a frameshift?

A) The deletion occurs at the beginning of a gene.
B) The deleted base is adenine.
C) The deletion consists of three consecutive bases.
D) The deletion is a result of an error in replication.


Ans: C) The deletion consists of three consecutive bases.

Biology & Microbiology

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Arabinose sugar is used by ara+ bacteria but cannot be used by ara– mutants. When both ara3 and ara5 mutants are introduced into the same recipient via a vector, and the recipients still cannot use arabinose, what can you conclude?

What will be an ideal response?

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Which step of the cellular respiration pathway produces 4 CO2, 6 NADH, 6 H+, 2 FADH2, and 2 ATP?

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Square planar arrangement of cells that forms when round bacteria remain attached to each other during reproduction are called ________.

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Biology & Microbiology