The selective agent is the environmental cause of fitness differences among organisms with different phenotypes

Indicate whether the statement is true or false


TRUE

Biology & Microbiology

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Which of the following is most likely to have a small protein called ubiquitin attached to it?

A) a cyclin protein, that usually acts in G1, in a cell that is in G2 B) a cell surface protein that requires transport from the ER C) an mRNA leaving the nucleus to be translated D) a regulatory protein that requires sugar residues to function properly E) an mRNA produced by an egg cell that will be retained until after fertilization

Biology & Microbiology

The presence of the ________ chromosome means that a person will probably appear to be male

Fill in the blank(s) with correct word

Biology & Microbiology

Salmonellosis is most frequently caused by

A) Salmonella enterica serovar Typhi. B) Salmonella enterica serovar Typhimurium. C) Salmonella enterica serovar Enteriditis. D) Salmonella enterica serovars Typhimurium and Enteriditis.

Biology & Microbiology

The evolution of life on Earth was made possible by ____

a. DNA b. organelles

c. an environment that favors oxygen photosynthesizers d. natural selection that favors efficient reproduction of organisms e. random mutations

Biology & Microbiology