________ is a progressive brain disease in which the dopamine-producing neurons in the movement control center of the brain die

Fill in the blank(s) with correct word


Parkinson's disease

Biology & Microbiology

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If the genus Quercus (oaks) is monophyletic, then this means that

A. all species of oaks grow in similar habitats. B. oaks all have nearly identical appearance. C. all species of oaks are descended from a common ancestor. D. oaks cannot be classified in a single family or order. E. all species of trees are classified as being in a single order.

Biology & Microbiology

A scientist is studying the HOTAIR ncRNA in human cells growing in culture. She identifies a mutation in a cell line that she suspects may affect the function of HOTAIR. The mutation changes the sequence in region 2 from 5?-CUCCCUU-3? to 5?-CUGGACG-3? (see diagram). How will this mutation affect the function of HOTAIR?

A. The mutant HOTAIR will bind to different target genes than the normal HOTAIR, but it will not inhibit their expression. B. The mutant HOTAIR will bind to the same target genes as the normal HOTAIR, but it will not inhibit their expression. C. The mutant HOTAIR will bind to different target genes than the normal HOTAIR, and it will inhibit their expression. D. The mutant HOTAIR will not be produced. E. There will be no difference in the function of the mutant and normal HOTAIR ncRNAs.

Biology & Microbiology

It is thought that all eukaryotes have about 300 genes in common. Would you predict that these genes would be used at different times during the life cycle of multicellular animals? Explain your answer

What will be an ideal response?

Biology & Microbiology

What is a potential problem with the use of transgenic varieties of plants that contain Bt toxin?

A) Bt toxin may be harmful to humans. B) Bt toxin may be harmful to some beneficial insects. C) Transgenic crop varieties with Bt toxin are not very hardy and require a lot of care. D) Transgenic crop varieties with Bt toxin require large amounts of chemical insecticides to grow.

Biology & Microbiology