A cluster of functionally related genes that are regulated together and encoded into a single mRNA molecule is referred to as a/an___ and can be found in ________ cells.

A. repressor, eukaryotic
B. CAP, all
C. operator, eukaryotic 
D. promoter, prokaryotic
E. operon, prokaryotic


Answer: E

Biology & Microbiology

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Biology is more completely understood using an integrated approach as opposed to a compartmentalized approach

A. true B. false

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How do you explain this result?

You are trying to improve growth in an economically important fish species. These fish have a gene for large size with two alleles (L,l). You cross a large female (LL) with a small male (ll) and get all large fish! The genotypes of the F1 are 100% Ll, so you assume that large size is dominant to small. You then cross a small female with a large male and get all small fish! The genotypes of this F1 are normal. A. The gene for large size is a maternal effect gene. B. L is not dominant to l. C. The gene for large size is a sex-linked gene. D. L is dominant to l. E. The gene for large size is a maternal effect gene and L is dominant to l.

Biology & Microbiology

Deserts often occur in the rain shadow of mountain ranges

Indicate whether the statement is true or false

Biology & Microbiology

Cytokinesis in animal cells involves the formation of a/an:

a. oncogene b. cell plate c. cleavage furrow d. sister chromatid

Biology & Microbiology