Use the Following to Answer Questions

question 27

Multiple Choice

Use the following to answer questions :
In dogs,phenotype A (erect ears and barking while following a scent) is caused by dominant alleles;phenotype B (droopy ears and silent while following a scent) is caused by recessive alleles.A dog that is homozygous for both traits of phenotype A is mated to a dog with phenotype B.
-If the genes for the two traits are unlinked,and the F₁ generation is crossed,what is the expected phenotypic ratio of the F₂ generation?

• A) 9:3:3:1 (A:erect silent:droopy barking:B)
• B) 1:1 (A:B)
• C) 1:0 (A:B)
• D) 1:2:1 (A:erect silent:B)
• E) 4:1 (A:B)

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Definitions:

Sensory Information

Data received by the senses (sight, hearing, touch, taste, and smell) that is then processed by the brain.

Brain Organizes

The process by which the brain structures and arranges information and sensory inputs to make sense of the world.

Sensory Nerves

Nerves that transmit sensory information from the body's periphery towards the central nervous system, allowing for the perception of stimuli.

Sense Receptors

Specialized cells or organs in the body that respond to external stimuli, such as light, sound, or touch, and transmit signals to the brain.