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
nordsb [41]
3 years ago
6

Northern elephant seals were hunted to the point that their population size was reduced to as few as 20 in the late 1800s. Since

then, their populations have rebounded to over 30,000. However, the genetic diversity is significantly reduced in the rebounded population of elephant seals. What explains this lack of genetic diversity in a population of 30,000?
Biology
2 answers:
KatRina [158]3 years ago
5 0

Population bottlenecks.  but their genes still carry the marks of this bottleneck: they have much less genetic variation than a population of southern elephant seals that was not so intensely hunted.

murzikaleks [220]3 years ago
5 0

Answer:

Population bottleneck

Explanation:

Population bottleneck refers to drastic decrease in a population size due to environmental effects or human interference. When very low individuals survive and multiply, they might still recover the population size but the genetic diversity is reduced a lot. This is because allele frequency can decrease for a lot of alleles when the population size is decreasing, some alleles might even get eliminated completely from the population.

Here, even though Northern elephant seals regained their population to 30000 they had started from only the 20 remaining seals. Due to lack of diversity in remaining seals, even the progeny did not show genetic diversity.

You might be interested in
Since the early 1960s, fluoride has been added to many sources of drinking water to prevent cavities in teeth. This is called fl
mestny [16]

The correct answer is:

There is no ASSOCIATION between fluoride exposure and increased cancer risk in humans.

Answer choice A.

7 0
3 years ago
Read 2 more answers
Plzzzzz help meeee plzzzz
Tamiku [17]

Answer:

The answer is true..

Yes, the presticides cause aquatic animals like fishes to die..

6 0
2 years ago
Which of these best represents a fatty acid molecule
Elan Coil [88]
We need to see the options to give you an answer

3 0
3 years ago
In figuer 23-3, witch letter points to the structure through witch water is lost during transportation?A)D)E)F)
vichka [17]

Answer:D becz it is acurit

Explanation:

6 0
3 years ago
What is different between plant and animals
ycow [4]
The difference between plant and animals is that plants take carbon dioxide while animals breathe in that oxygen and breathe back out carbon dioxide
5 0
1 year ago
Other questions:
  • Which of the following has a positive effect by acting as an artificial reef in some areas?
    9·1 answer
  • What evidence supports the idea that a supernova remnant was involved in Earth’s formation?
    14·2 answers
  • Which is an inference?
    9·1 answer
  • What change occurs during oxidation?
    15·1 answer
  • What is the Roman numeral of XVI
    13·1 answer
  • Direct gene activation involves a second-messenger system. True or False
    9·2 answers
  • What is the purpose of having ampicillin in the plate?
    11·1 answer
  • Halons and CFC's both
    14·2 answers
  • Do most mutations generally cause the development of new traits found in organisms?
    13·2 answers
  • Help asap plsss no link or websites I think brainley has a bot problem
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!