Map Units on a Linkage Map Cannot Be Relied Upon

question 39

Multiple Choice

Map units on a linkage map cannot be relied upon to calculate physical distances on a chromosome for which of the following reasons?

• A) The frequency of crossing over varies along the length of the chromosome.
• B) The relationship between recombination frequency and map units is different in every individual.
• C) Physical distances between genes change during the course of the cell cycle.
• D) The gene order on the chromosomes is slightly different in every individual.

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Definitions:

Multicollinearity

A statistical phenomenon in which two or more predictor variables in a multiple regression model are highly correlated, potentially affecting the reliability of the model's estimates.

Independent Variables

Variables in statistical or mathematical modeling that can be manipulated or chosen by the researcher to investigate their effect on dependent variables.

Regression Coefficient

A value that represents the degree of change in the dependent variable for a one-unit change in an independent variable within a regression model.

Dependent Variable

In statistical modeling and experimental design, the variable being tested and measured, which is expected to change in response to changes in independent variables.