In your fly laboratory, you find a larva that is missing segments Lb, T1, T2, and T3. This larva probably has a mutation in a ___________ gene.

A. pair-rule
B. gap
C. maternal effect
D. segment-polarity
E. gap or segment-polarity


B. gap

Biology & Microbiology

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The lancelet is a(n) ________

A) annelid B) flatworm C) chordate D) tunicate

Biology & Microbiology

So if I really want to know the details about my chances of arteriosclerosis I should be paying closest attention to my 

A. total amount of serum cholesterol. B. RNA. C. relative amounts of HDLs and LDLs. D. total amount of VLDLs.

Biology & Microbiology

Chemical analysis of an unidentified compound isolated from cells showed the presence of carbon, hydrogen, oxygen, nitrogen, and sulfur. This unknown compound is most likely a

A. nucleic acid. B. lipid. C. carbohydrate. D. protein.

Biology & Microbiology

The differences between DNA and RNA include all of the following except

A. DNA have thymine as a base; RNA has uracil as a base B. DNA is single stranded; RNA is double stranded C. DNA is usually double- stranded; RNA is usually single -stranded. D. DNA encodes for proteins; RNA facilitates in protein synthesis E. DNA and RNA are both made up of nucleotides

Biology & Microbiology