The domains of life arose as barriers between gene exchange evolved between organisms

Indicate whether the statement is true or false.


Answer: TRUE

Biology & Microbiology

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It is difficult to assign a precise phenotypic definition to alcoholism because _____

a. not enough volunteers agree to participate in genome wide association studies b. alcoholism does not have environmental components c. alcoholism is an innate behavior d. genetic testing for alcoholism is not available e. excessive consumption of alcohol is subjective

Biology & Microbiology

In a Hardy-Weinberg equilibrium, as the frequencies of homozygous genotypes increase, the frequency of the

heterozygous genotype _____. a. doubles b. is reduced by a factor of 10 c. increases linearly d. decreases linearly e. remains the same

Biology & Microbiology

An organism that lives on dead organic matter is known as a 

A. commensal organism. B. saprophyte. C. parasite. D. None of the above is correct.

Biology & Microbiology

When water ionizes, the negatively charged OH- fragment is the ________ ion.

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

Biology & Microbiology