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ExtremeBDS [4]
3 years ago
5

Afrikaners are a Southern African ethnic group descended from a very few Dutch settlers first arriving in the seventeenth and

Biology
1 answer:
Ne4ueva [31]3 years ago
6 0

The Afrikaners are an example of a founder effect that occurs when  population and the random decrease in genetic variation is an example of genetic drift.

Explanation:

When some individuals from a population move to form a new colony, this phenomenon is called founder effect as in case of Afrikaners. The small population or group of individuals forming a new colony may not exhibit the full genetic diversity of the population they were once the part.

The alleles would get expressed in different frequencies than it would have in original population.

There are chances that some alleles are lost or missing also. The new colony formed has small population so chances of genetic drift are very strong.

Genetic drift does not depend upon the benefit or harmful effect of the alleles as it occurs merely by chance sampling. The small population of Afrikaners felt the effect of genetic variation hence strong genetic drift is seen in them.

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I think meiosis is the process that creates gametes. It is creating sperm or egg, where does it actually start? what I am asking
r-ruslan [8.4K]

~Hello There!~

Meiosis is a form of cell division that results in four daughter cells. It is germline cells (gametes) that undergo this process.

Hope This Helps You!

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8 0
3 years ago
What does the cell do when it does not have oxygen?
vfiekz [6]
Its electrons relese and it dies. or another way to say it is that it burns. 


3 0
3 years ago
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Which statement about the burden of childhood illness in the under-5 age group is true?
11Alexandr11 [23.1K]

Answer:

b

Explanation:

6 0
3 years ago
If water molecules inside and outside of a cell became non polar , how would the transport of materials in and out of the cell b
postnew [5]
<h2>Answer:</h2>

The water will move in and out freely. The material transport which is due to the water transport will be affected.

<h3>Explanation:</h3>
  • Water is a partially polar molecules. Many ionic compounds and ions travel inside and outside the cell due to attachment with water molecule.
  • As well as water movement is controlled due to its polar nature through cell membrane. and the cytoplasm and outer environment is separate due to non polar cell membrane.
  • If the water become non polar then the movement through cell membrane will be easy for water. And the molecules dissolved in water will also be transported uncontrollably.

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Use what you know about atmospheric circulation and seasonal changes in the sun’s orientation to earth to explain the highly sea
viva [34]

Answer:

The Inter-Tropical Convergence Zone (ITCZ)region gets the most direct sunlight at any given period in time. This in turn causes air to be unstable with a drop in pressure and rise of air which cools and condenses into clouds to form precipitation causing the wet season in the tropics.

In this region, the sun is directly or almost overhead as seen during summer periods in the tropics.

Only in areas of the North and South of the ITCZ known as doldrums which at times are parallel to the ITCZ do we have high pressure that aren't conducive to precipitation causing dry season in the tropics.

In the ITCZ zone, we also have the tropical rain forests along the equator with huge amount of all round rain for the year.

Along the equator, on either side of the rain forests we have the dry and wet forests with the savannah to the North of this region and the southern hemisphere to the south of these forests since these forests are seen mostly in the ITCZ than the savannahs.

Rain shadows and ocean cueeebts may at times cause some savannahs to be along the equator and some rain forests -wet and dry forests- to be positioned further form the equator.

4 0
3 years ago
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