Fruit Color in a Particular Plant Is Controlled by a Set

question 4

Multiple Choice

Fruit color in a particular plant is controlled by a set of three QTLs (quantitative trait loci,or "polygenes") that work in an equal and additive manner.Each QTL has two alleles (i.e. ,A and a) ;each allele represented by a capital letter produces one dose of yellow pigment,while alleles represented with lower case letters do not produce any pigment at all.
-A trihybrid plant (A/a;B/b;C/c) is selfed.Assuming no effects of the environment,what proportion of the offspring will have the same fruit color phenotype as the dihybrid parent?

• A)0.031
• B)0.125
• C)0.250
• D)0.312
• E)0.422

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Definitions:

Apocrine Sweat Glands

Specialized sweat glands that produce a thicker, milky secretion and are typically associated with hair follicles in underarm and genital areas.

Thermoregulation

The physiological process by which an organism regulates its internal temperature within a certain range, despite external changes.

Integumentary System

The organ system consisting of the skin, hair, nails, sweat, and oil glands, providing protection to the body.

Sebaceous Glands

Small oil-producing glands in the skin that secrete sebum into hair follicles to lubricate the skin and hair.