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
Alchen [17]
3 years ago
13

The northern elephant seal was hunted almost to extinction during the 18th and 19th centuries. Less than 100 seals were left to

contribute to the gene pool of their future generations. Since the early 20th century, the elephant seals have been protected by law in both the U.S. and Mexico. Over 100,000 seals now inhabit the western shores of North America, all related to the small population that survived the slaughter of hunters.Scientists fear the elephant seals may be more susceptible to disease and pollution due to a ______.A. heterozygous advantageB. disruptive type of selectionC. Founder EffectD. Bottleneck Effect
Biology
1 answer:
Bad White [126]3 years ago
6 0

Answer:

The correct answer is option D, that is, bottleneck effect.

Explanation:

A phenomenon, which occurs due to events like earthquakes, floods, or other natural calamities that result in the severe declination in the size of a particular population is known as the bottleneck effect. The bottleneck effect is an extreme illustration of genetic drift that results in the reduction of a population's genetic variability.  

With the decline in the size of a specific population, a reduction in the genetic variability of the same population is witnessed due to the loss of alleles. This eventually makes the population vulnerable to pollution and diseases. Hence, the given case is an example of the bottleneck effect.  

You might be interested in
How does type 1 diabetes impact the negative feedback loop that controls glucose levels in the bloodstream?
Nastasia [14]

Answer:

Insulin causes the body's cells to take in and store glucose, lowering the blood glucose concentration. If blood glucose gets too low, the body releases glucagon, which causes the release of glucose from some of the body's cells.

Explanation:

7 0
3 years ago
Explain why treehouses dont change in height as a tree grows
Dmitrij [34]
Treehouses are built on the stem and the three branches, which do not grow in length, only in width. Trees grow in length only in the area of the buds, which are located at the ends of branches. 
Maybe it is easier to understand this if you imagine that you put a small house replica on the palm of your hand and that your fingers are constantly growing from their tips.  So, the house on your palm would not move, only your fingers, (the analogy to the three top buds) would become longer.
7 0
3 years ago
9) Genetic variation is the source for evolution. Without a variety of phenotypes, there would be no differential survival upon
Firlakuza [10]

The genetic variation occurs due to induced changes to the genome from environmental factors, fertilization of two haploid gametes during gamete fusion. The correct options are D and E.

<h3>What is genetic variation?</h3>

The presence of differences in gene sequences between individual organisms of a species is referred to as genetic variation. It allows for natural selection, which is one of the primary forces driving life's evolution.

The genetic variation occurs due to induced changes to the genome from environmental factors, fertilization of two haploid gametes during gamete fusion.

Thus, the correct options are D and E.

For more details regarding genetic variation, visit:

brainly.com/question/848479

#SPJ1

3 0
2 years ago
Read 2 more answers
Which phrase is the best summary of the model shown?
Sveta_85 [38]

Answer:

A

Explanation:

6 0
3 years ago
Read 2 more answers
What are the basic cell structures that impacts diffusion?
maria [59]

I only know one for the first one, don't be mad, please.

1. I'm pretty sure one of them is membrane

2. A cell can die through infection, poisoning, overheating, or even lack of oxygen.

3. I think it depends on how fragile the membrane of the cell is.

I'm so so so sorry if these didn't help, I'm trying my best, lol.

5 0
3 years ago
Other questions:
  • Whaere is the nucleus found
    15·2 answers
  • Which method would allow you to study the behavior of a tiger in its native habitat in India?
    12·1 answer
  • Answer fast for 25 points please be right
    5·2 answers
  • What do scientist call all of the compounds that contain carbon and are found in living things
    8·2 answers
  • Which are deuterostomes?<br><br>A. flowering plants <br>B. humans <br>C. fungi<br>D. slime molds​
    13·1 answer
  • Why is homeostasis essential to living things?
    7·1 answer
  • The action force in the cell is:
    9·2 answers
  • Once blood delivers oxygen, what does it pick up from cells on its way back to the heart?
    14·2 answers
  • Help pls .. What phase is this cell in?
    14·1 answer
  • Water is important to life because it does what for the cells
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!