What is the function of RNA interference?
What will be an ideal response?
RNA interference appears to be a sequence-specific posttranscriptional regulatory mechanism that employs short RNA sequences.
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Many disorders are associated with defects in organelle function. Suggest a cellular consequence for a defect in lysosomal enzymes
What will be an ideal response?
Genes in the NK4 class are involved in heart development in both vertebrates and fruit flies. They are also involved in the development of pumping organs in organisms that lack a heart, such as roundworms and cnidarians
Available information suggests that in early animals, the ancestral NK4 gene and its associated regulatory network ________. A) evolved convergently in vertebrates and arthropods B) were important in the development of the heart and blood vessels C) evolved by duplication of the Hox cluster D) governed the development of some fluid-filled pumping structure E) did not have any function
Why is genetic variation important in helping a species survive?
a) the more varied a population, the less likely the environment is to change b) if the environment changes, some members of the species will probably have adaptations that enable them to survive and reproduce c) if the environment stays the same, a species with genetic variety will probably evolve rapidly d) disease rarely affects a population that has a lot of genetic variety
What is the function of cholesterol in the plasma membrane?
A. receptor B. enzyme C. support D. cell marker E. channel