Author Question: The conclusion of the Russian study of the interaction between genotype and environment suggested ... (Read 55 times)

sam.t96

  • Hero Member
  • *****
  • Posts: 570
The conclusion of the Russian study of the interaction between genotype and environment suggested that boys exposed to maternal rejection who also carried a specific variation of the DAT1 gene were more likely to be depressed after their experience. The conclusion the textbook draws from this research is that
 
  a. a variant of the DAT1 gene is the cause of depression.
  b. depression is a genetic disorder.
  c. maternal rejection is one of the causes of depression.
  d. prolonged exposure to dopamine may lead to depression.

Question 2

Research has shown that people who are socially isolated are vulnerable to a host of cardiovascular and infectious diseases due to increased levels of the stress hormone cortisol. A recent study, summarized in the textbook, provides evidence that this is effected by differences in
 
  a. the genomes of individuals who are high in cortisol levels.
  b. diet that encourages the production of cortisol.
  c. gene expression.
  d. Mendelian inheritance.



johnpizzaz

  • Sr. Member
  • ****
  • Posts: 345
Answer to Question 1

Answer: d: prolonged exposure to dopamine may lead to depression.

Answer to Question 2

Answer: c: gene expression.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

For a complete list of videos, visit our video library