Knowing that persons with blonde hair exhibit the phenotype of a ...

[melly21297]

Knowing that persons with blonde hair exhibit the phenotype of a recessive gene, which of the following genetic scenarios would most likely underlie such a trait?
 
  A)
  aa
  B)
  A heterozygous pairing
  C)
  Either AA or Aa
  D)
  Different alleles at a gene locus

Question 2

Upon entering the room of a 74-year-old client receiving brachytherapy for cervical cancer, you find the radiation implant and the position-holding device in the client's bed. What is the nurse's first best action?
 
  A)
  Assess the client's mental status.
  B)
  Use tongs to place the implant in the radiation container.
  C)
  Notify the physician and move the client to a different room.
  D)
  Don gloves and attempt to reposition the implant and positioning device.

[nothere]

Answer to Question 1

Ans:
A

Feedback:

A recessive trait is expressed solely in a homozygous pairing, such as aa. A heterozygous pairing, in which there are two different alleles at a gene locus, will not express a recessive trait. Aa is an example of a heterozygous pairing.

Answer to Question 2

Ans:
B

Feedback:

To minimize staff radiation exposure, the rules of time, distance, and shielding come into play. If a radioactive device dislodges, there should be a lead container and tongs in the room, so the device can be safely stored until the radiology department can dispose of of it safely.