1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Iteru [2.4K]
3 years ago
5

You’ve likely heard of polar bears (Ursus maritimus) and grizzly bears (Ursus arctos horribilis). Have you heard of a grolar bea

r or a pizzly bear? These might be unfamiliar because they are the offspring of matings between polar bears and grizzlies. A handful of these animals have been born in zoos; three have been documented in nature. Due to their rarity, only a few grolars (grizzly dad and polar bear mom) or pizzlys (polar bear dad and grizzly mom) have been studied in detail. Their fur color, head shape and ear shape (see figures below) are striking intermediates between the phenotypes of their parents.The origin of polar bears was the result of:
a. peripatric speciation.
b. sympatric speciation.
c. allopatric speciation.
Biology
1 answer:
Karolina [17]3 years ago
7 0

Answer:

allopatric speciation.

Explanation:

  • When the population belonging to the same biological species becomes separated from each other due to some geographical factor such that no gene flow can occur between the two separated populations then the speciation that occurs on account of this is known as allopatric speciation.
  • The geographical isolation that separates the two groups can be the origin of a mountain,  the formation of islands, volcanic eruption, etc. which prevents the two groups fro mating with each other and ultimately causes their lineage to speciate.
  • Although the two separate populations are unable to mate due to geographical factors, if the two populations are allowed to mate again, given that they have not been separated very long ago, they can give rise to hybrids.
  • Thus, in the given question it is given that polar bears and grizzly bears have been mated and hybrids have been produced and this points out to the fact that polar bears are result of allopatric speciation.
You might be interested in
Which formation is the result of wind erosion?
Dovator [93]

Of the following given choices;

A. glacial erratics B. U-shaped valleys C. unusually shaped rocks D. mudslides.

The answer is; C.

The wind carries soil particles is it blows. These soil particle hit on rocks in their path and over time gradually erode the rocks. An example of this type of erosion is the aeolian process. Usually the bottom o the rock is eroded more than the top. This is because the bottom is hit by larger soil particles that are heavier to carry by the wind. An example of rock formed in this process is attached in the picture below.


8 0
3 years ago
Which two pieces of equipment did the geologist most likely use to determine the density of the copper nuggets?
zhuklara [117]
A glass flask and sodium and hydrogen hope it helped
7 0
3 years ago
How does the tilt of earths axis affect how the Suns rays strike earth
pantera1 [17]
<span> It is hotter near the equator because the Sun's rays hit the Earth more directly in that area so they are focused or concentrated more in that area</span>
6 0
3 years ago
Read 2 more answers
If a persons kidney fails, why is he or she hooked up to a dialysis machine?
Sliva [168]
The answer is C........
3 0
3 years ago
Read 2 more answers
Hi, can someone answer this I need this as soon as possible? I would really appreciate it.
hoa [83]
So they respond by releasing hormones that stimulate the body to retain sodium and water. Blood vessels fill with additional fluid, and blood pressure goes up. The narrowing in one or both renal arteries is most often caused by atherosclerosis, or hardening of the arteries.
4 0
3 years ago
Other questions:
  • Is the nucleotide in the picture a DNA nucleotide or an RNA nucleotide? How can you tell?
    5·1 answer
  • You have spent 24 hours traveling from the U.S to New Zealand, on quite a few airplanes with many stops. Because of the stress,
    15·1 answer
  • What group of organisms is most closely related to archeabacteria?
    5·1 answer
  • Qué pasa si no se lleva a cabo la citocinesis después de la mitosis?!!!
    11·1 answer
  • How do landslides impact wildlife
    7·1 answer
  • A women brings her 5 year-old nephew to you for evaluation of a wart. You feel there are 2 therapeutic options; treat the wart w
    6·1 answer
  • A nerve cell with normal levels of intracellular calcium is treated with intracellular IP3, which opens calcium channels in the
    14·1 answer
  • The diagram shows the general structure of a lipid, which consists of two main parts.
    8·1 answer
  • Which postmortem parameter begins at 3 days
    13·1 answer
  • The particles of an object move _________ when the temperature increases
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!