The development of cauliflower and broccoli from wild cabbage is partly explained by

A. 
a mutation in a flower development gene that was  artificially selected by humans.

B. 
a mutation in a leaf development gene that evolved by natural selection.

C. 
homoplastic convergence of two plant lineages.

D. 
gene duplication and divergence, leading to novel functions.

E. 
a mutation in a Hox gene that was  artificially selected by humans.


A. 
a mutation in a flower development gene that was  artificially selected by humans.

Biology & Microbiology

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Indicate whether the statement is true or false.

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Which tissue type produces melanin?

A. epithelial B. connective C. muscle D. nervous E. endocrine

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You observe a pine with two distinctly different types of cones. The best explanation for this is 

A. the tree was produced by grafting. B. a mutation has occurred in this plant. C. one cone is the male reproductive structure and the other is the female reproductive structure. D. one cone is a gametophyte and the other is a sporophyte.

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Match the molluscan body part to its function.

A. visceral mass B. foot C. mantle D. mantle cavity

Biology & Microbiology