Birds typically have a large sternum with a bladelike vertical protrusion to which flight muscles attach called:

A. Radius
B. Ulna
C. Breastbone
D. Keel
E. Humerus


Answer: D

Biology & Microbiology

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How many alleles are there of each SNP?

A. one B. two C. three D. four E. any number, depending on the SNP

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Which permits a single gene to code for more than one polypeptide?

A) retention of different introns in the final version of the different mRNA strands B) alternative RNA splicing C) differentiation D) addition of different types of caps and tails to the final version of the mRNA strands

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Which features of naked mole rats are similar to eusocial insects? (Check all that apply) 

A. higher relatedness between siblings than between parent and child B. colony has a large number of individuals C. a single queen is responsible for breeding D. division of labor E. haplodiploidy

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A bacterial cell that is deposited on the surface of an appropriate solid growth media will divide repeatedly until it forms a visible accumulation of bacterial growth. This is known as a bacterial

A. smear. B. biofilm. C. colony. D. community.

Biology & Microbiology