Which of the following domains are the MOST closely related, in that they share a unique common ancestor?

a. Archaea and Bacteria
b. Bacteria and Eukarya
c. Archaea and Eukarya


Ans: c. Archaea and Eukarya

Biology & Microbiology

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A Punnett square is generally used to 

A. determine the genotype of each parent from its phenotype. B. determine the phenotype of each parent from its genotype. C. predict the genotypic ratio among the offspring. D. predict the number of offspring that will exhibit each genotype.

Biology & Microbiology

An Hfr strain is produced when

A. an F episome integrates into the E. coli chormosome B. an F episome leaves the E. coli chromosome. C. an F episome is transferred to a new cell. D. an F episome leaves the host chromosome and removes some of the host chromosome.

Biology & Microbiology

Antibodies can be produced against all of the

following EXCEPT a. viruses. b. bacterial cell walls. c. fungi. d. toxins. e. all of these can be bound by an antibody

Biology & Microbiology

The solubility of oxygen ________ as water warms

Fill in the blank(s) with correct word

Biology & Microbiology