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:

Cambrian

A geological period approximately 541 million years ago, marked by a rapid increase in the diversity of life forms on Earth, known as the “Cambrian explosion.”

Animal Diversity

The vast range of different animals that exist on Earth, including variations in size, structure, habitat, and behavior.

Oxygenation

The process of adding oxygen to an environment, often related to the uptake of oxygen by living organisms for respiration.

Acidification

The process of becoming more acidic, often referred to in the context of environmental changes such as ocean acidification due to increased CO2 levels.