The Hormone Prolactin, Found in Distantly Related Vertebrates, Exerts Different

question 51

Multiple Choice

The hormone prolactin, found in distantly related vertebrates, exerts different effects in different species. From an evolutionary standpoint, this is an indication that prolactin

• A) can only have functions related to childbirth.
• B) is an ancient hormone whose function diversified through evolution.
• C) was a recent evolutionary adaptation.
• D) was not required in fish and amphibians.

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Definitions:

Respondents

Individuals or entities who provide answers or responses in a survey or study.

Two-sample Chi-square

A statistical test used to determine if there is a significant difference between the categorical distributions of two independent samples.

Goodness-of-fit Test

A statistical test used to determine how well observed data fit a specific distribution or model.

Test of Independence

A statistical method used to determine if there is a significant association between two categorical variables.