In a Hypothetical Experiment, Researchers Sequence a Gene from a Colony

question 40

Multiple Choice

In a hypothetical experiment, researchers sequence a gene from a colony of bacteria at various times in the history of the colony.In the common ancestor, the nucleotide at site 998 is A.After 1,500 generations, it changes to G.After 5,000 generations, it changes back to A.We can infer that a total of _______ substitution(s) have occurred.Without knowledge of the sample taken at 1,500 generations, we would have inferred that _______ substitution(s) had occurred.

• A) one; zero
• B) one; one
• C) two; zero
• D) two; one
• E) two; two

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Definitions:

Major Depressive Disorder

A mental health disorder characterized by persistent feelings of sadness, lack of interest in activities, and other symptoms that impair daily functioning.

Genetically Linked Depression

A form of depression that is believed to have a genetic component, making certain individuals more predisposed to developing the condition.

Hormonal Imbalance

A condition where there is too much or too little of one or more hormones in the bloodstream, which can affect various bodily functions and health.

Traditional Gender Roles

Socially and culturally defined expectations for individuals based on their gender, often emphasizing masculinity in males and femininity in females.