A Test Cross Is Used to Determine Whether an Individual

question 154

Multiple Choice

A test cross is used to determine whether an individual with

• A) a dominant phenotype is heterozygous or homozygous.
• B) a dominant genotype is heterozygous or homozygous.
• C) a recessive phenotype is heterozygous or homozygous.
• D) a recessive genotype is heterozygous or homozygous.
• E) None of the above

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Definitions:

Reduced Virulence

A decrease in the ability of a pathogen to cause disease, often as a result of evolutionary pressures or host-pathogen interactions.

Serial Passage

A method used in microbiology and virology involving the sequential transfer of a sample containing viruses or bacteria from one culture medium to another to study the evolution of the pathogen.

Jumped

In a biological context, often used metaphorically to describe a sudden change or rapid evolution in a species or genetic material.

Species

A fundamental category in biological classification, defined as a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.