Choose the true statements about the evolution of flower symmetry. 

_____ Some radially symmetric flowers have ancestors with bilaterally symmetric flowers.
_____ Having radially symmetric flowers is ancestral to having bilaterally symmetric flowers.
_____ All cases of flowers with bilateral symmetry involve the CYCLOIDIA (CYC) gene.
_____ Bilateral symmetry in some flowers is a homoplastic character derived through convergent evolution.


__X__ Some radially symmetric flowers have ancestors with bilaterally symmetric flowers.
__X__ Having radially symmetric flowers is ancestral to having bilaterally symmetric flowers.
_____ All cases of flowers with bilateral symmetry involve the CYCLOIDIA (CYC) gene.
__X__ Bilateral symmetry in some flowers is a homoplastic character derived through convergent evolution.

Biology & Microbiology

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An adult brain weighs about

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A chromosome has broken, and a piece of one chromosome is translocated to a non-homologous chromosome. This is an example of what type of chromosomal alteration?

A) paracentric inversion B) dicentric bridge C) unbalanced translocation D) Robertsonian translocation E) inversion loop

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The location of translation in prokaryotic cells is

A. on ribosomes. B. on the plasma membrane. C. on mesosomes. D. on chromosomes E. in the nucleoid.

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Dormant, thick-walled resting cells of cyanobacteria that are resistant to desiccation are called ________.

A. akinetes B. baeocytes C. thylakoids D. hormogonia

Biology & Microbiology