In Drosophila,the Phenotype Bar-Eye Is Due to a Tandem Duplication

question 27

Essay

In Drosophila,the phenotype bar-eye is due to a tandem duplication of several bands on the X chromosome.Occasionally (1 out of 1600),all true-breeding stocks of bar-eyed flies yield an even more extreme phenotype called ultrabar,which is in fact due to a triplication of this chromosomal segment.The hypothesis used to explain ultrabar's origin is that a slight mispairing of chromosomes can occur whenever there is a duplication.If crossing-over occurs (in females),then recombinants would form as follows:
What other evidence,not involving cytological observation,would you seek to substantiate this hypothesis? Be as exact as you can.There are at least two possible answers.

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Definitions:

Social Perception

The process of interpreting and understanding the behavior and motives of others through clues, context, and social cues.

Concurrence

The occurrence of two or more events or conditions at the same time, often with a degree of cooperation or agreement.

Matching Hypothesis

The theory that individuals are more likely to form and sustain relationships with others who are similar to them in physical attractiveness and other traits.

Physically Attractive

Characteristics or features of a person that are aesthetically pleasing or beautiful to others, often influencing social perceptions and interactions.