A Plantlike Organism on the Planet Pandora Can Have Three

question 13

Multiple Choice

A plantlike organism on the planet Pandora can have three recessive genetic traits: bluish leaves,due to an allele (a) of gene A;a feathered stem,due to an allele (b) of gene B;and hollow roots,due to an allele (c) of gene C.The three genes are linked and recombine.
A geneticist did a testcross with an organism that had been found to be heterozygous for the three recessive traits and was able to identify progeny of the phenotypic distribution (+ = wild type) shown in the figure below.
In which progeny phenotypes has there been recombination between genes A and B? The parent phenotypes are 4 and 8.

• A)1,2,5,and 6
• B)1,3,6,and 7
• C)2,4,5,and 8
• D)2,3,5,and 7

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Definitions:

Resolution Stage

The resolution stage refers to the final phase in several psychological and physiological processes, during which an issue is resolved or the body returns to baseline after arousal.

Sexual Response Cycle

A model outlining the phases of physiological changes that occur during sexual activity, typically including excitement, plateau, orgasm, and resolution phases.

Orgasm

A peak of sexual pleasure accompanied by a series of rhythmic contractions of the genital muscles, often resulting in the release of sexual tension.

Erectile Disorder

A sexual dysfunction characterized by the inability to develop or maintain an erection of the penis during sexual activity.