What is meant by the term heterogeneous nuclear RNA (hnRNA)?
What will be an ideal response?
pre-mRNA, primary transcripts before processing in eukaryotes
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A zygote is formed ____
a. after a fertilized egg undergoes mitotic divisions to mature b. by the fusion of male and female somatic cells c. by the fusion of egg and sperm nuclei d. directly by meiosis in fungi e. by the mitotic divisions of spores in plants
Mutants that are lacIS do not produce lac enzymes, regardless of the presence or absence of lactose
Indicate whether the statement is true or false
Tastes and smells are distinct kinds of environmental information in that _____
A) neural projections from taste receptors reach different parts of the brain than the neural projections from olfactory receptors B) the single area of the cerebral cortex that receives smell and taste signals can distinguish tastes and smells by the pattern of action potentials received C) tastant molecules are airborne, whereas odorant molecules are dissolved in fluids D) distinguishing tastant molecules requires learning, whereas smell discrimination is an innate process
Between 9 am and 5 pm, the lizard was likely moving repeatedly between sun and shade.
a. true b. false