Which one of the following nucleotides hydrogen base pairs with adenine in an RNA molecule?
A. cytosine
B. thymine
C. uracil
D. adenine
E. guanine
Answer C
Biology & Microbiology
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Transformation is not useful in determining relatedness between two organisms because it frequently crosses genera.
Answer the following statement true (T) or false (F)
Biology & Microbiology
Constitutive genes are those that have constant levels of expression
Indicate whether the statement is true or false
Biology & Microbiology
A(n) ____ allows two rival males to assess one another's strengths without engaging in a potentially damaging fight.
A. conditioned stimuli B. eusocial response C. instinctive behavior D. kinetic movement E. threat display
Biology & Microbiology
The nucleolus organizer region (NOR) is responsible for production of what type of cell structure?
A) ribosome B) endoplasmic reticulum C) nucleolus D) mitochondria E) chromatids
Biology & Microbiology