As a result of __________, large dogs such as Great Danes do not normally mate with small dogs such

as Poodles.
a. temporal isolation
b. mechanical isolation
c. gametic isolation
d. sexual isolation
e. postzygotic barriers


Bv

Biology & Microbiology

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Which of the following genera grow symbiotically within root nodules of legumes as nitrogen-fixing bacteroids?

A. Nitrosomonas B. Bacteroides C. Rhizobium D. Agrobacterium

Biology & Microbiology

Crop plants modified to be resistant to insect damage produce Bt-toxin from a (bacterial/fungal/synthetic) gene.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

According to your text, in which of the following steps of the TCA cycle is NADH/FADH2 not produced?

A) TCA-2 B) TCA-3 C) TCA-4 D) TCA-6 E) TCA-8

Biology & Microbiology

V. cholerae and Photobacterium damsela are used to perform quality control on TCBS agar. After overnight incubation, no growth is observed. What is the next course of action?

a. Reinoculate the TCBS agar, and incubate for 36 hours. b. Check the pH to ensure that it is 8.6. c. Reincubate the plates for another 24 hours. d. These two organisms are poor choices for quality control on TCBS agar.

Biology & Microbiology