Which cross will produce only heterozygous offspring?

A) AA aa
B) AA Aa
C) Aa Aa
D) Aa aa


D) Aa aa

Biology & Microbiology

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Ruminants need special enzymes to digest

a. starch. b. proteins. c. cellulose. d. lignin. e. glycogen.

Biology & Microbiology

If a strain of Neisseria gonorrhoeae is genetically altered such that it no longer has pili, predict how this might affect its virulence.

A. It will be less able to establish infection because it won't be able to adhere to host tissue. B. It will be better able to establish infection and will be more resistant to antibiotics. C. It will be less able to establish infection because it won't be able to survive inside phagocytes. D. It will be less able to establish infection because it will be more susceptible to host factors such as complement.

Biology & Microbiology

Plantar warts represent a sexually transmitted disease.

Answer the following statement true (T) or false (F)

Biology & Microbiology

In 1977 Dr. Robert Ballard and J.F. Grassle discovered

a. underwater seamounts. b. the midocean ridge. c. the Titanic. d. rift communities. e. the Andrea Doria.

Biology & Microbiology