This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why are short-tailed opossums classified as marsupials if they do not have a pouch? What will be ... (Read 27 times)

dbose

  • Hero Member
  • *****
  • Posts: 597
on: Jul 21, 2018
Why are short-tailed opossums classified as marsupials if they do not have a pouch?
 
  What will be an ideal response?

Question 2

What is the Whitten effect?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Briannahope

  • Sr. Member
  • ****
  • Posts: 364
Reply #1 on: Jul 21, 2018
Answer to Question 1

They have marsupial bones (os marsupalia) that form part of the pelvic attachment to the abdominal muscles. STOs have skin around each nipple that forms a cushion or donut around each young to secure the attachment. Embryos are delivered in an undeveloped state to further develop outside the uterus.

Answer to Question 2

The Whitten effect is the synchronization of estrous cycles when a new male is introduced to a colony of females.


dbose

  • Member
  • Posts: 597
Reply 2 on: Jul 21, 2018
Excellent

xiazhe

  • Member
  • Posts: 331
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

A male and female fat-tailed gerbil (Pachyuromys duprasi) A male and female fat-tailed gerbil (Pachyuromys duprasi)
Blue-tailed Bee-eater from behind, showing the blue rump and tail Blue-tailed Bee-eater from behind, showing the blue rump and tail
Prehensile-Tailed Porcupine Prehensile-Tailed Porcupine
Hormones acting through the brain help regulate metabolism and short- and long-term appetite. Hormones acting through the brain help regulate metabolism and short- and long-term appetite.
Short, Upbeat Massage Sessions can Improve Mental Alertness. Short, Upbeat Massage Sessions can Improve Mental Alertness.
Video: Deafness Culture

For a complete list of videos, visit our video library