If the frequency of PKU among newborns is approximately 1/10,000 (when the parents are unrelated). What is the risk of a child with PKU if the parents are uncle and niece?

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#Question id: 23735

#Unit 8. Inheritance Biology

Phenotypic variation that is due to genetic differences is referred to as heritability. It can be the Broad-sense heritability and Narrow-sense heritability, the Broad-sense heritability which is ranges from 0 to 1. Identify the correct prediction about these ranges?

a) 0 is all of the phenotypic variance results from differences in genotype

b) 0 is all of the phenotypic variance results from environmental variation

c) 1 is all of the phenotypic variance results from differences in genotype

d) 1 is all of the phenotypic variance results from environmental variation

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#Question id: 23766

#Unit 7. System Physiology – Animal

The sensory receptors for vision are:

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#Question id: 23767

#Unit 7. System Physiology – Animal

The sensory receptors for vision are located on the:

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#Question id: 23768

#Unit 7. System Physiology – Animal

Which of the following cells function as photoreceptors?

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#Question id: 23769

#Unit 7. System Physiology – Animal

What are the difference between the cones and rode cells?

a. Cones are sensitive to low-intensity light and Rods are responsible for vision at higher light levels. 

b. Rods are sensitive to low-intensity light and cones are responsible for vision at higher light levels. 

c. Rods do not participate in color vision and cones do.

d. Cones do not participate in color vision and Rods do.

Choose correct statements accordingly

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#Question id: 23770

#Unit 7. System Physiology – Animal

What is the function of rods and cones in the eye?