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Masteriza [31]
4 years ago
14

The original source of all genetic variation is _____.

Biology
1 answer:
zmey [24]4 years ago
8 0

Answer:

C. Mutation.

Explanation:

The mutation is the source of all genetic variation. There are two types of mutations. One is the natural mutation, and another is the artificial mutation. The natural mutation occurs due to the environmental cause, and humans using various mutagens do artificial mutations.

These two types of mutations always bring variation in any organism. This variation can be positive or can be negative too. Natural mutation is not possible to control so that anything can happen. Either positive or negative changes can occur. But in the case of artificial mutation, in 90% cases, positive results come in genetic variation.

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What detail helps answer the question about Rica’s problem? Add the detail to the chart.
Varvara68 [4.7K]

Answer:

Explanation:

The Answer Is The Principal Sees Rica And Talks to her.

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2 years ago
Help help help help help help help help help
GuDViN [60]

Answer:

1. Uniformitarianism.

2. Weathering

3. Erosion.

Explanation:

1. Uniformitarianism: The present is the key to the past. It is a theory which states that the natural processes and laws that are being experienced in the present have been operating in the past and as such applies to everything in the universe.

2. Weathering: the breakdown of rocks into sediments. Weathering can be defined as the physical and chemical breakdown of rock into smaller pieces called sediment. Weathering can be classified into two categories namely;

I. Physical weathering : it is the process of breaking rocks into pieces without affecting its chemical composition e.g temperature, abrasion and frost action.

II. Chemical weathering : it is the process of breaking rocks into pieces by chemical action which leads to changes in its chemical composition e.g carbonation, hydration, plant acid and oxidation.

3. Erosion: the process of transporting sediment to a new location. Erosion can be defined as a geological process which typically involves the wearing out of earthen (soil) materials and the transportation of these materials by natural forces like water, wind, etc. Soil erosion is greatest when the soil is steep.

Generally, the steepness of a body affects the rate at which other materials would flow or move around. Thus, the steeper a river or stream, the greater would be its rate of erosion.

4 0
3 years ago
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During which phase of the cell cycle is a cell's DNA copied?
kow [346]

The answer to this question will be "Mitosis." During Mitosis the DNA cell is replicated during the cell cell cycle. Mitosis is basically cell division that equals two copied daughter cells with the same amount of chromosomes as each other during the cell cycle.

Hope this helps.

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3 years ago
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A scientific theory is a statement that describes what scientists expect to happen every time under certain conditions.
stiv31 [10]

Answer:

This statement is true

Explanation:

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What would happen to an organism if its cell membranes became permeable to most substances
levacccp [35]

It would die after harmful substances entered the cell. This would happen because it would burst due to over-bulging.

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