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Alexxandr [17]
3 years ago
12

Random changes in the gene pool of a small population

Biology
2 answers:
Viefleur [7K]3 years ago
7 0

gene flow or genetic drift can cause changes   in a population

Marina86 [1]3 years ago
6 0

It's called genetic drift: when changes in the alleles of a population are altered due to chance. For example:

There's a population of red beetles. A couple of the beetles are blue due to a genetic mutation. Suddenly, an elephant steps on the beetles, which, coincidentally, most of which were red. This resulted in more blue beetles than red, and after a few generations, mist other beetles are blue, and only a few are red.

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Apply Concepts:
Vlada [557]

Answer:

  the very long river

Explanation:

Larger rocks tend to settle out of the water flow sooner than smaller rocks do, so the rocks remaining at the end of a very long river would tend to be very small. A very short river may still be carrying somewhat larger rocks.

The very long river probably drops the smallest rock pieces near the ocean.

_____

Perhaps the implied assumption here is that a very short river will have a higher gradient than a very long river. Another assumption is that rocks are picked up nearer the headwaters, and the gradient decreases with distance.

If both rivers end at a waterfall into the ocean, they may very well carry the same sort of rock size distribution. If the short river traverses muddy terrain, and the longer river traverses rocky terrain, the answer may be reversed.

6 0
3 years ago
Does decaying organic matter and animal waste add CO2 to the atmosphere ?
ivanzaharov [21]

In the carbon cycle, decomposers break down dead material from plants and other organisms and release carbon dioxide into the atmosphere, where it's available to plants for photosynthesis. ... After death, decomposition releases carbon into the air, soil and water.

8 0
3 years ago
What happens to the heat and moisture from the ocean?
LUCKY_DIMON [66]

Answer:

The answer is A

Explanation:

When water molecules are heated, they exchange freely with the air in a process called evaporation. Ocean water is constantly evaporating, increasing the temperature and humidity of the surrounding air to form rain and storms that are then carried by trade winds.

5 0
3 years ago
Read 2 more answers
DNA is often compared to a twisted ladder. In this analogy, what forms the
Oxana [17]
A- on the sides you would find the phosphate and sugar so the center is the AT or CG
5 0
2 years ago
In certain rats, black fur is dominant over white fur, If two rats that are both heterozygous for fur colored are mated, what wo
zavuch27 [327]

Answer:

Three different genotypes and two different  colors

Explanation:

Because both rats have heterozygous genes, meaning they have 2 different alleles, ex: "Yy") The offspring can have different genotypes and colors because the parents have heterozygous genes.

hope this helps!

6 0
2 years ago
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