Author Question: A single egg contributes __________ to the developing zygote. a. XX b. X c. Y d. ... (Read 32 times)

bobbysung

  • Hero Member
  • *****
  • Posts: 519
A single egg contributes __________ to the developing zygote.
 
  a. XX
  b. X
  c. Y
  d. XY

Question 2

The hormone ____________ is involved in the maternal bond to her pups.
 
  a. progesterone
  b. estradiol
  c. prolactin
  d. oxytocin



Natalie4ever

  • Sr. Member
  • ****
  • Posts: 335
Answer to Question 1

Answer: B

Answer to Question 2

Answer: D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

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.

For a complete list of videos, visit our video library