After microRNAs are transcribed, processed, and folded into stem-and-loop hairpin structures, specialized enzymes cleave the miRNAs to double-stranded fragments that are typically around 20-25 nucleotides long
A. true
B. false
A
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Answer the following statements true (T) or false (F)
1. The nervous system of a cnidarian consists of a central ganglion leading into a nerve net. 2. The two body forms of some radiates is an example of alternation of generations. 3. Although a medusa and a polyp look different, they have similar body plans. 4. All Platyhelminthes are parasitic.
In a pedigree, the first affected family member seeking medical attention is the
____________________. Fill in the blank(s) with the appropriate word(s).
During embryological development, if a certain gene on the Y chromosome is activated during the sixth or seventh week of development, the embryo will develop into a ________
Fill in the blank(s) with correct word
Most of the nitrogen in the environment is in the form of nitrogen gas, which is the form used by most organisms
Indicate whether the statement is true or false