Mutations can also occur within the regulatory regions of genes. Fragile X is an example of a disorder caused by one such mutation that increases the length of the long arm of the X chromosome and ultimately decreases mRNA stability

Which type of regulatory mutation causes Fragile X? A) promoter
B) polyadenylation
C) splice site
D) triplet-repeat expansion
E) frameshift


D

Biology & Microbiology

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The normal _____________________ protein binds to hundreds of other proteins to facilitate synaptic function, cell signaling, intracellular transport, and transcription

Fill in the blank(s) with correct word

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Two snapdragons heterozygous for alleles that encode red and white flower color are crossed. If the

red and white alleles show incomplete dominance, what will be the phenotypes and ratios of the F2 generation?

a. 100% pink b. 100% red c. 50% white, 50% red d. 25% red, 50% pink, 25% white e. 25% pink, 50% white, 25% red

Biology & Microbiology

Which of the following do not get infected by viruses?

A) Animals B) Plants C) Bacteria D) All of these can be infected by viruses.

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All of the following can be transmitted by drinking contaminated water, except

A) Cyclosporiasis B) Giardiasis C) Cryptosporidiosis D) Balantidiasis E) Babesiosis

Biology & Microbiology