Which of the following types of physical mutagens produces thymine dimer mutations?

A. gamma rays
B. ultraviolet light
C. X-rays
D. ionizing radiation
E. microwave


Answer: B

Biology & Microbiology

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Roots contain starch-heavy plastids known as

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Repair of heteroduplex regions formed during recombination can result in a 1:3 or 3:1 segregation of parental alleles, which indicates that ________ has occurred.

A) allelic exchange B) gene conversion C) crossing over D) recombination E) DNA replication

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How is bacterial DNA packaged?

A) in a lattice along the capsule's inner wall B) in the nucleus as a chromosome C) at the center of the cell in a chromosome D) in dozens of small fragment at the center of the cell

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What does MALDI stand for?

A) Matrix-Assisted Laser Desorption Ionization B) Maser-Assisted Ligand Desorption Ionization C) Maser-Assisted Laser Desorption Ionization D) Matrix-Assisted Ligand Desorption Ionization

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