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
Vera_Pavlovna [14]
4 years ago
10

How could genetic drift explain differences in the genotype frequencies among the caucasian and aborigine populations?

Biology
1 answer:
Novay_Z [31]4 years ago
7 0

Genetic drift occurs when there is no random mating across a population. This causes a change in allelic frequency due to a random sampling of the population.

As the aboriginal population explored the earth,  a small part of the population became geographically isolated either due to continental drift and climate changes. As the isolated population grew bigger, they established their own gene pool. This resulted a change in genotypic frequencies from that of the aboriginal population.







You might be interested in
Complete the flowchart to identify the process by which blue-light photoreceptors and auxin control phototropism in plants
Yuki888 [10]
Is there a flowchart that comes with this?  Or no?
7 0
3 years ago
Identical population-splitting events occurred simultaneously on two neighboring islands, Islands B and C, which are each initia
sweet-ann [11.9K]

Answer:

This is due to the event of Speciation that happened for the rodents in Island B but not for the rodents in Island C.

Explanation:

  • Due to splitting of the population,
  • The sub-population of rodents formed in Island B are B1 and B2.
  • The sub-population of rodents formed in Island C are C1 and C2.
  • In case of Island B, each of the B1 and B2 sub-populations that got split from each other developed certain mutations that were necessary for them to adapt to the particular diverse environment each of them were exposed to, through the period of 50,000 years. These mutations were so varied that reproductive isolation was generated between them that resulted in each of them to develop into different species.Hence, speciation happens here and B1 and B2 are incapable of inter-breeding.
  • In case of Island C, each of the C1 and C2 sub-populations that got split might have got exposed to similar environmental change or no environmental change or the environmental change might have been too small to cause drastic change in each of the sub-populations. As a result of this the two sub-populations might have acquired certain mutations to adapt to the environment each of them were exposed to, through a period of 100,000 years. These mutations might not have been too variable or contrasting to cause reproductive isolation between C1 and C2. Hence, no new speciation happens here and C1 and C2 are capable of inter-breeding.

4 0
3 years ago
What are two functions of meiosis
stealth61 [152]
Meiosis, or reductional division, is a process during which exchange of genetic material between the homolog chromosomes (crossing-over and recombination) takes place and such a division of the genetical material occurs the four daughtercells have received each only one set of chromosomes (they are haploid, in contrast to the mother cell which contained homolog chromosomes and was diploid) <span>have each a distinct genetical composition, also different from that of the parental cell.
Meiosis is divided into twofases: meiosis I and meiosis II.
 </span>

3 0
3 years ago
The weight of an object at the south pole is
Fynjy0 [20]
The same weight it would be anywhere else in the world.

7 0
4 years ago
Where is the energy in a polysaccharide stored?
kkurt [141]

Answer:

You store it: Glycogen

Explanation:

Excess glucose is stored in the liver as the large compound called glycogen. Glycogen is a polysaccharide of glucose, but its structure allows it to pack compactly, so more of it can be stored in cells for later use.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Extracellular pathogens such as viruses and bacteria in body fluids are attacked by _____. view available hint(s)
    10·1 answer
  • Which type of interaction occurs between the remora and its host organism?
    12·1 answer
  • When blood glucose levels are difficult to control in type 2 diabetes some form of insulin may be added to the treatment regimen
    12·1 answer
  • Look at total flight height (represented by the green bars). Remember that total flight height was calculated by multiplying the
    12·1 answer
  • How was the Cretaceous period different from the jurassic <br> period
    6·2 answers
  • What was the actual proportion of the basis for equal amounts of DNA
    13·1 answer
  • 14. When one lion in a pride is alarmed by danger in their territory, it becomes alert and tense. Immediately
    13·1 answer
  • In which type of bond are atoms held together like magnets?​
    13·1 answer
  • Explain why Biological diagrams should not be shaded​
    14·2 answers
  • BSE or mad cow disease is easily cured once it is diagnosed.<br> True<br> False
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!